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• 03:25

Fabulous Food Chains: Crash Course Kids #7.1

563 views / 3 likes - added

Everyone eats, right? But how does that food get the energy to power you? In this episode of Crash Course Kids, Sabrina talks about the way energy moves, or flows, through an ecosystem and how that movement forms Food Chains! This first series is based on

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• 18:59

The Four Color Theorem | Coloring a Planar Graph

48 views / 0 likes - added

Train your problem solving skills today with SkillShare: https://skl.sh/upandatom3 Check out the video we did over on Willie's Channel! https://youtu.be/jwQlULjESTs Subscribe to Willie's Channel KhAnubis! https://www.youtube.com/user/tobirates The Four Co

• 05:03

Can you solve the buried treasure riddle? - Daniel Griller

276 views / 0 likes - added

Practice more problem-solving at https://brilliant.org/TEDEd/ View full lesson: https://ed.ted.com/lessons/can-you-solve-the-buried-treasure-riddle-daniel-griller After a massive storm tears through the Hex Archipelago, you find five grizzled survivors in

• 04:09

How Much Bacteria Is In Your Drinking Water?

359 views / 1 likes - added

Water filtration systems are extremely effective, but bacteria still manages to escape! How much of it are you drinking? Why There’s Fluoride In Drinking Water ►►►► http://bit.ly/1OyF4u3 Sign Up For The TestTube Newsletter Here ►►►► http://bit.ly/1myXbFG

• 05:10

Spaced Out: Crash Course Kids #25.1

295 views / 1 likes - added

So... how big is the Universe? It's big... really big... no, bigger than that... it's big. In this episode of Crash Course Kids, Sabrina gives us some perspective on this whole Universe thing and how we fit into it. Watch More Crash Course Kids: https://w

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• 04:42

The Life Hydrologic: Crash Course Kids #30.2

309 views / 0 likes - added

Last week we went up up up a mountain. Well, today we're going down down down into the ocean to see what habitats await us there. Yep, the ocean has layers and the types of things we encounter there change the deeper we go. Watch More Crash Course Kids: h

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• 04:33

Weather Vs. Climate: Crash Course Kids #28.1

580 views / 1 likes - added

So we have Weather and Climate... but are they the same thing? No, no they are not. But they are both super important to how the geosphere is shaped. In this episode of Crash Course Kids, Sabrina chats with us about the differences between Weather and Cli

• 04:46

Can you solve the Mondrian squares riddle? - Gordon Hamilton

226 views / 0 likes - added

Practice more problem-solving at https://brilliant.org/TedEd/ Dutch artist Piet Mondrian’s abstract, rectangular paintings inspired mathematicians to create a two-fold challenge. Can you solve the puzzle and get to the lowest score possible? Gordon

• 04:00

What is the Zeroth Law of Thermodynamics?

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Why is there a zeroth law of thermodynamics? What use is such a simple-sounding law? And how can it be used to smash glass? Chemical engineer Valeska Ting explains in the first film from our 2016 advent calendar, all about thermodynamics. Visit the online

• 03:46

NASA | Looking For The Shadows Of New Worlds

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Astronomers have used many different methods to discover planets beyond the solar system, but the most successful by far is transit photometry, which measures changes in a star's brightness caused by a mini-eclipse. When a planet crosses in front of its s

• 03:31

Four Spheres Part 2 (Hydro And Atmo): Crash Course Kids #6.2

569 views / 0 likes - added

The second part of our two part tale of the puzzle that is Earth. In this episode, Sabrina talks about the Hydrosphere and the Atmosphere and what is contained in each one. Let's dive in!!! This first series is based on 5th grade science. We're super exci

• 01:36

Fetching Omnicopter

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Fetching Omnicopter We have developed a computationally efficient trajectory generator for six degrees-of-freedom multirotor vehicles, i.e. vehicles that can independently control their position and attitude. The trajectory generator is capable of generat

• 08:51

Comparative Anatomy: What Makes Us Animals - Crash Course Biology #21

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Hank introduces us to comparative anatomy, which studies the similarities and differences in animal anatomy to support the theory of evolution and the shared ancestry of living things. Crash Course Biology is now available on DVD! http://dft.ba/-8css Like

• 05:28

Let's Take A Hike: Crash Course Kids #30.1

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Today we're going to take a hike up Mt. Kilimanjaro so we can talk about how the geosphere changes based on many different things. On the same mountain we can travel through many different habitats like rain forests, savannas, and moorlands. Let's take a

• 03:20

Why peregrine falcons are the fastest animals on earth

377 views / 1 likes - added

Cheetahs are fast, but not faster than a diving peregrine falcon. Subscribe to our channel! http://goo.gl/0bsAjO This video features a clip courtesy of Human Planet, a BBC, Discovery Channel and France Television Co-Production. Check out BBC Earth Unplugg

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• 04:01

Four Spheres Part 1 (Geo And Bio): Crash Course Kids #6.1

579 views / 2 likes - added

In this episode of Crash Course Kids, Sabrina talks about two of the four spheres that make up our planet; The Geosphere and the Biosphere. What's in these spheres? How do they affect us? How do they fit into the puzzle that is Earth? All is contained wit

• 02:16

Why Our Favorite Crops Live Fast and Die Young

133 views / 0 likes - added

To start using Tab for a Cause, go to: http://tabforacause.org/r/minuteearth2 We mostly grow annual plants because they reliably produce energy-rich seeds, which we like to eat. Thanks to our Patreon patrons https://www.patreon.com/MinuteEarth and our You

• 03:47 Popular

A Change Of Scenery: Crash Course Kids #17.2

1,720 views / 2 likes - added

The world changes. It really does! But sometimes it changes so slowly that we don't notice it. Other times it changes REALLY FAST!!! In this episode of Crash Course Kids, Sabrina talks about some of the reasons things can change quickly or slowly. This fi

• 04:26

Severe Weather: Crash Course Kids #28.2

551 views / 4 likes - added

So, what's the difference between "weather" and "severe weather"? Is it just how hard the wind is blowing? Is it just thunder and lighting? Well, it can be some or all of those things. In this episode of Crash Course Kids, Sabrina talks to us about what m

• 04:37

Living Things Change: Crash Course Kids #41.1

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Have you ever heard of the Peppered Moth? It's a great example of how living things can change because their environment has changed. And it's not just them! There used to be giant insects roaming the world, but they got smaller through time because their

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• 03:43

What On Earth: Crash Course Kids #10.1

510 views / 0 likes - added

We've already talked about how the Earth is divided into four spheres (The Hydrosphere, the Biosphere, the Geosphere, and the Atmosphere). But, how do these different sphere interact with each other? In this episode of Crash Course Kids, Sabrina chats wit

• 07:34

Hexadecimal Number System | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

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• 09:39

How to Build a 4K Editing Computer (More cores are not always better) - Smarter Every Day 202

107 views / 0 likes - added

For \$50 off select Casper mattresses, go to http://casper.com/smarter and use promo code: smarter (Terms and conditions apply). BEHIND THE SCENES: https://www.youtube.com/watch?v=ph-uq_B5TSI ⇊ Click below for more links! ⇊ HOW TO BUILD A COMPUTER 1. DON'T

• 04:06 Popular

Weathering And Erosion: Crash Course Kids #10.2

1,609 views / 8 likes - added

In this episode of Crash Course Kids, Sabrina gives us a real world example of how the Hydrosphere and Geosphere affect each other in the form of Weathering and Erosion. Think of Weathering as the force that makes a mess and Erosion as the force that clea

• 04:26

Star Personalities: Crash Course Kids #25.2

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Down here, on Earth, if you look up at the night sky, it seems like all the stars up there look the same. Or maybe at least similar. But, it turns out that stars are very different and we shouldn't stereotype them. Some are bigger, some burn through their

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• 03:43

What On Earth: Crash Course Kids #10.1

63 views / 1 likes - added

We've already talked about how the Earth is divided into four spheres (The Hydrosphere, the Biosphere, the Geosphere, and the Atmosphere). But, how do these different sphere interact with each other? In this episode of Crash Course Kids, Sabrina chats wit

• 04:29

The Great Aqua Adventure: Crash Course Kids #24.1

396 views / 3 likes - added

Water travels... a lot. In fact, the water cycle is amazing and takes water all over the planet by using evaporation, condensation, and precipitation. In this episode of Crash Course Kids, Sabrina shows us how the water cycle works and how you can create

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• 01:18

Can You Make 4 Triangles From 6 Matches?

418 views / 0 likes - added

Can you use 6 matches to make 4 triangles of equal size and equal shape? This is harder than it sounds! Give it a try before watching the video for a solution. If you like my videos, you can support me at Patreon: http://www.patreon.com/mindyourdecisions

• 03:51

How We Evolved To Browse The Web

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Thanks to the University of Minnesota for sponsoring this video! http://twin-cities.umn.edu/The decisions we make while we browse the internet are suprisingly similar to the ones animals make as they forage for food...here's why.Thanks also to our Patreon

• 05:05

The 2017 Nobel Prizes: Biological Clocks and Microscopy

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Last week, the recipients of the 2017 Nobel Prizes were announced. We take a closer look at the winners of the Physiology and Chemistry Awards, whose breakthroughs change the way we study sleep, and allow us to look at microscopic biological systems in a

• 09:39

Vision: Crash Course A&P #18

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Next stop in our tour of your sensory systems? VISION. With a little help from an optical illusion, we take a look inside your eyes to try to figure out how your sense of vision works -- and how it can be tricked. *** Table of Contents The Structure of th

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• 10:40

Hearing & Balance: Crash Course A&P #17

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Crash Course A&P continues the journey through sensory systems with a look at how your sense of hearing works. We follow sounds as they work there way into the ear where they are registered and transformed into action potentials. This mechanism not only h

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• 03:58 Popular

Landforms, Hey!: Crash Course Kids #17.1

1,012 views / 2 likes - added

If you look out your window, you'll probably notice a bunch of things; houses, streets... hopefully a tree. But beyond that you'll see things like mountains, rivers, volcanoes... well, hopefully not a volcano. These are landforms and they come in differen

• 04:21

Is 3D Audio The Future Of Listening?

367 views / 1 likes - added

With virtual reality on the rise, engineers are looking for ways to improve audio to match the images you see. How does 3D audio work? This is Your Brain On VR ►►►► http://dne.ws/1OxYb6W DNews Live Tickets Here ►►►► http://dne.ws/1Fa2OCh Read More: Surrou

• 04:48

Dinosaur Pee?: Crash Course Kids #24.2

389 views / 1 likes - added

Today we continue our exploration of the Water Cycle by drinking some dinosaur pee. Yep! Well, it's a little less gross that it sounds. It turns out that all of the water on Earth is just constantly recycled in what we call a closed system. No water comes

• 04:22

Impossible Algebra Problem

514 views / 0 likes - added

This problem is making the rounds. Can you place numbers in the four boxes so all the equations are true? Blog post (text/image explanation): http://wp.me/p6aMk-4up If you like my videos, you can support me at Patreon: http://www.patreon.com/mindyourdecis

• 06:21

An Electric Eel And A Caiman

309 views / 0 likes - added

Wherein Isobel and Maria show us the ropes -- or nets -- for surveying fishes in the Amazon. The distribution of fish in tropical river systems is important to understanding how animals move around these waterways. Where there are big fish -- like the ele

• 05:57

The real reason streetcars are making a comeback

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It’s mostly about economic development. Subscribe to our channel! http://goo.gl/0bsAjO Starting in the late 20th century, modern streetcar proposals started rippling across municipalities in the United States. They’re touted as infrastructure carrying ben

• 03:25

Can You Solve This? AA + BB + CC = ABC

671 views / 0 likes - added

If AA + BB + CC = ABC, what are the values of A, B, and C? All the digits are distinct and positive. Watch the video for a solution. Blog (text explanation): http://wp.me/p6aMk-4Cm If you like my videos, you can support me at Patreon: http://www.patreon.c

• 02:39

The Secret Soviet Virus That Helps Kill Bacteria

297 views / 0 likes - added

Antibiotic resistance is threatening to render antibiotics useless, but scientists may have found their answer in bacteria-eating viruses. Can We Create New Humans With Bacteria? - https://youtu.be/F3LAZ6DHqwg Sign Up For The Seeker Newsletter Here - http

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• 05:10

Weather Channels: Crash Course Kids #34.2

598 views / 2 likes - added

Why is my weather app sometimes wrong? Well it has a lot to do with wind. Jet Streams, air cells, the shape and movement of the Earth... there are a lot of things that make weather a little unpredictable. In this episode of Crash Course Kids, Sabrina talk

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• 04:31

How Norway designed a more humane prison

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There’s a better way to design prison architecture. Become a Video Lab member! http://bit.ly/video-lab Halden Prison in Norway looks sort of like a fancy dorm room or a hotel — much different than the barbed wire and cramped cells we often associate with

• 04:42

How Warren Buffett Tried To Trick Bill Gates In A Dice Game

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Warren Buffett once challenged Bill Gates to a dice game similar to this one. How would you play the game? Blog post (text explanation) http://wp.me/p6aMk-4ro Source The dice numbers and the story are described at Microsoft Research's website for non-tran

• 02:43

We Asked Bill Gates: Do You Need To Be Rich To Be Healthy?

176 views / 0 likes - added

This video is in collaboration with Bill and Melinda Gates. You can check out the Gates Annual Letter here: http://b-gat.es/2Cfph0j Thanks to Bill and Melinda Gates for their financial support. Thanks also to our supporters on https://www.patreon.com/Minu

• 04:14

Can One Mathematical Model Explain All Patterns In Nature?

265 views / 0 likes - added

All patterns in nature might be describable using this mathematical theory. How did Alan Turing influence how we see the natural world? Who Was Ada Lovelace, The World's First Computer Nerd? - http://bit.ly/290mnkb Sign Up For The Seeker Newsletter Here -

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• 07:00

Abstract-ness | Introduction To Algebra | Algebra I | Khan Academy

224 views / 0 likes - added

The general idea behind the word 'abstract' Watch the next lesson: https://www.khanacademy.org/math/algebra/introduction-to-algebra/overview_hist_alg/v/the-beauty-of-algebra?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Missed the previous lesson? h

• 05:57

How To Split A Cake Fairly Using Math

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How can 2 people split up a cake, knowing that each person wants to get a larger piece than the other? What about 3 people, or even N people? This is an example of a fair division problem from game theory. There are many cake-cutting algorithms to produce

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• 19:00

Incredible Invisible Frog!

282 views / 2 likes - added

Please SUBSCRIBE - http://bit.ly/BWchannel Buy Coyote’s Book - http://bit.ly/BOOKbraveadventures Watch More - http://bit.ly/BTlemurfrog On this episode of Breaking Trail, Coyote and the crew discover a frog with transparent skin! Known as the Glass Frog,

• 03:16

Your Body Could Be Immune to CRISPR! Is This the End of Gene Editing?

106 views / 0 likes - added

Cutting and pasting DNA to cure diseases is a medical dream come true, but CRISPR technology is facing a major roadblock: our immune systems. Doctors Have to Trick Your Brain’s Defenses to Heal You, Here’s Why - https://youtu.be/USiZ6dUGUt8 Read More: Wha

• 05:56

Weather In Space (the Rocky Planets): Crash Course Kids #43.1

362 views / 3 likes - added

Do other planets have weather? It turns out that, yes, they do! But, the weather isn't all the same on other planets because of things like atmosphere. In this episode of Crash Course Kids, Sabrina takes us on a tour of the weather on the rocky planets in

• 12:32

Protecting Privacy with MATH (Collab with the Census)

27 views / 0 likes - added

This video was made in collaboration with the US Census Bureau and fact-checked by Census Bureau scientists. Any opinions and errors are my own. For more information, visit https://census.gov/about/policies/privacy/statistical_safeguards.html or search "d

• 03:52

Food Webs: Crash Course Kids #21.2

396 views / 2 likes - added

Last time we put a Polar Bear in the desert and we still feel bad about that, but there's a lot more going on in ecosystems than just temperature. In fact, there are so many elements in ecosystems, that if just one leaves or gets out of whack, it can be t

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• 03:49

Do Crosswalk And 'Close Door' Buttons Really Do Anything?

246 views / 0 likes - added

Are the buttons we push to cross streets, close elevator doors, and nudge the office thermostat really connected to anything? Some aren’t! Learn how these placebo buttons (don’t) work. Learn more at HowStuffWorks.com: http://science.howstuffworks.com/life

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• 02:48

Picture Graphs | Measurement And Data | Early Math | Khan Academy

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• 09:26

Planning & Organization: Crash Course Study Skills #4

188 views / 0 likes - added

The best way to make sure you’re making the most of the time you have is to start off well organized. This week we’re talking about planning and organizational systems and how to set yourself up for success. Resources: Planning Mode vs. Robot Mode: https:

• 04:08

Measuring A Golden Statue | Measurement And Data | Early Math | Khan Academy

303 views / 0 likes - added

Measure an object with same-size length units that span it with no gaps or overlaps. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-measure-data-topic/cc-early-picture-graphs/e/solving

• 04:42

Home Sweet Habitat: Crash Course Kids #21.1

359 views / 1 likes - added

How would a Polar Bear do if you put it in the desert? Not well. But why? Why can't anything live anywhere? Well, this has to do with Habitats and how animals (including humans) are suited for living in one place over another. In this episode, Sabrina tal

• 01:57

501 views / 1 likes - added

Pick a 2 digit number. Got it? Now and add up the digits. Subtract that from your original number. Look up the resulting number in the table. Can I figure out the symbol you are looking at? This video predicts your symbol and explains why this math trick

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• 07:52

Find The 10 Digit Number Classic Puzzle And Solution

270 views / 0 likes - added

I'm thinking of a 10 digit number that uses the each digit 0 to 9 exactly once and where the number formed by the first n digits is divisible by n. What could my number be? The video explains how to find the answer using tests for divisibility. Blog post:

• 06:24

The Seemingly Impossible Escape Logic Puzzle

470 views / 0 likes - added

An evil logician takes Alice and Bob captive. They have a chance to escape if they can deduce the total number of trees in the prison. Can they figure it out? Source of puzzle wu: riddles forum https://www.ocf.berkeley.edu/~wwu/cgi-bin/yabb/YaBB.cgi?board

• 05:02

Positive And Negative Slope | Algebra I | Khan Academy

293 views / 0 likes - added

Positive and negative slope Watch the next lesson: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/slope/v/similar-triangles-to-prove-that-the-slope-is-constant-for-a-line?utm_source=YT&utm_medium=Desc&utm_campaign

• 22:53

250,000 Dominoes - The Incredible Science Machine Vlog!

443 views / 3 likes - added

Behind the scenes from The Incredible Science Machine Game On with 250,000 dominoes! Many tests, fails, & a visit by Smarter Every Day! WATCH THE FALLDOWN! https://www.youtube.com/watch?v=Q0jeohWnmAQ&list=PLNPDtUHUkSPYZhO2bX1yl8dZ1HD8c2G_7&ind

• 05:07

Current Events: Crash Course Kids #34.1

530 views / 2 likes - added

What are air currents? Air currents are like rivers of wind caused by areas of high and low pressure.The air above the land is warmer and less dense, so it rises. The air over the water is cooler and heavier. The cool air rushes in toward the low-pressure

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• 03:00

Multiply Numbers By Drawing Lines

271 views / 0 likes - added

Gow to multiply numbers by drawing lines. Get the Multiply By Lines Book! https://www.amazon.com/gp/product/1500866148/ If you like my videos, you can support me at Patreon: http://www.patreon.com/mindyourdecisions Connect on social media. I update each s

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• 08:21

Two-variable Linear Equations And Their Graphs | Algebra I | Khan Academy

215 views / 0 likes - added

Introduction to 2-variable linear equations and their graphs Watch the next lesson: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/solutions-to-two-var-linear-equations/v/checking-ordered-pair-solutions-to-equatio

• 14:40

Are You Type-A or Type-B Personality? (Science Says You’re Neither)

185 views / 0 likes - added

You’ve probably heard of Type-A and Type-B personalities, but is there any science behind personality types? This Invisible Light Shows Us What Our Eyes Can't See - https://youtu.be/C0MacvbYZdQ Sign Up For The Seeker Newsletter Here - http://bit.ly/1UO1Px

• 07:10

TOUGH Interview Question - Ways To Give 11 Coins To 3 People

240 views / 0 likes - added

How many ways can you divide 11 coins to 3 people? How many ways are there if each person has to get at least 1 coin? This puzzle is an example of a technical interview question. The video demonstrates the solution, which indicates the number of non-negat

• 04:52

Can You Solve The Two Rope Puzzle?

279 views / 0 likes - added

You have two ropes and a lighter. Each rope burns in 60 minutes, but the ropes do not burn at a constant rate. How can you measure 45 minutes by burning the ropes? Some of you might have heard this problem before. If so, try this variation: how can you me

• 15:33

Democracy, Authoritarian Capitalism, and China: Crash Course World History 230

321 views / 0 likes - added

In which John Green teaches you about the end of World History, and the end of the world as we know it, kind of. For the last hundred years or so, it seemed that one important ingredient for running an economically successful country was a western-style d

• 06:24

Can You Solve The Chameleon Riddle?

367 views / 0 likes - added

A museum has 13 blue, 15 red, and 17 green chameleons. Whenever two chameleons of different colors meet, they both change into the color of the other chameleon (if blue and red met, for example, they would both turn green). As the chameleons mingle, is it

• 04:43

Gas Giants Weather: Crash Course Kids #43.2

315 views / 1 likes - added

Last time, we learned that there is in fact weather on other planets. But those were the rocky planets, like Earth. What about the big Gas Giants? What's the weather like there? In this episode of Crash Course Kids, Sabrina takes us on a virtual tour of t

• 10:20

SURPRISING Coin Flipping Probability - Flips To HH Versus HT

204 views / 0 likes - added

What is the expected number of coin flips until you get two heads in a row (HH)? What is the expected number of coin flips until you get a heads followed by a tails (HT)? The video presents the solution and an intuitive explanation for this probability ri

• 05:20

Is Russia Allowed To Make Their Own Internet? Sort Of

43 views / 0 likes - added

We use the internet every day, but who's in charge of owning all of it, and what happens when a country leaves the world wide web? Why Twisted Light Holds the Key to Radically Faster Internet - https://youtu.be/CvtsJuO3eTk Read More: What Happens if Russi

• 13:37

The History Of Life On Earth - Crash Course Ecology #1

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With a solid understanding of biology on the small scale under our belts, it's time for the long view - for the next twelve weeks, we'll be learning how the living things that we've studied interact with and influence each other and their environments. Li

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• 29:26

10 Magic Tricks in China | 魔术在中国

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Amazing Magic Tricks in China! Magic Shop ► http://www.EvanEraTV.com ► Subscribe - http://bit.ly/SubToEvan Magic Tricks in Beijing, China! In this special Around The World edition of How To Magic, Evan and the crew travel to the Great Wall of China and on

• 04:13

Adults Stumped By Geometry Problems For 10 Year Olds. Can You Solve Them?

323 views / 0 likes - added

These homework problems were given to 10 year old children (Year 5) in England (Glossop, Derbyshire) and they were posted to Facebook when some adults found them to be difficult. One person claimed the problems were impossible to solve. Can you figure the

• 03:29

Why Do Allergies Make You Sneeze?

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Do you suffer from allergies? Follow the dendritic cell and the entire Scientific American Allergy Orchestra to discover how allergens from pollen to pet dander can change the body’s tune. Transcript: Sneezy? Itchy? Perhaps your seasonal allergies have yo

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• 02:57

386 views / 1 likes - added

This problem has over 2 million comments on Facebook and is getting coverage in mainstream media and blogs. Can you figure out this Facebook fruit algebra puzzle involving apples, bananas, and coconuts? The video presents what many people consider to be t

• 01:40

How To Match Function Input To Output Given The Formula (example) | Algebra I | Khan Academy

210 views / 0 likes - added

Sal finds the input value for which f(t)=13, given that f(t)=-2t+5. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebra-functions/function-inputs-and-outputs/e/functions_matching_inputs_outputs?utm_

• 01:07

How To Match Function Input To Output Given The Graph (example) | Algebra I | Khan Academy

236 views / 0 likes - added

Sal finds the input value for which g(x)=-2 given the graph of g. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebra-functions/function-inputs-and-outputs/e/functions_matching_inputs_outputs?utm_so

• 04:32

How To Solve One-step Equations With Fractions And Decimals | 6th Grade | Khan Academy

434 views / 0 likes - added

Learn how to solve one-step addition and subtraction equations that have fractions and decimals in them. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-

• 09:00

Papers & Essays: Crash Course Study Skills #9

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Writing research papers is an essential skill in your career as a student, and this week we’re going to help you do that like a pro. From figuring out where to begin, to finding the best systems, to breaking out of “research recursion system” (maybe just

• 05:37

Linear Models Example 2 | Algebra I | Khan Academy

220 views / 0 likes - added

Marbles and water in tank Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/linear-functions-modeling/e/constructing-and-interpreting-linear-functions?utm_s

• 11:25

The First Humans on Mars | Space Time | PBS Digital Studios

380 views / 0 likes - added

Elon Musk’s SpaceX program proposes that 100 people could be sent to colonize Mars within 10 years. What might that colony look like? This episode was supported by Curiosity Stream. Go to curiositystream.com/spacetime and use the promo code SPACETIME Get

• 04:54

Why are earthquakes so hard to predict? - Jean-Baptiste P. Koehl

253 views / 0 likes - added

Take a look at the theories behind why earthquakes occur, what makes them so hard to predict and the warning system technologies we rely on today. -- In 132 CE, Zhang Heng presented his latest invention: a large vase he claimed could tell them whenever an

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• 08:27

Can You Solve The 3 Cards Riddle?

275 views / 0 likes - added

There are 3 cards in this problem. One card is blue on both sides, another is red on both sides, and the last is red on one side and blue on the other. The cards are put in a bag and I pick one at random. Without looking at the colors on the card, I place

• 13:39

9 CRIME SCENES AND RIDDLES TO WAKE YOU UP IN 7 SECONDS

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Wake up your brain in 7 seconds with these crime scenes and detective riddles! If you want to improve your logical skills and critical thinking then keep watching this video! These criminal cases and tricky riddles will test your general knowledge and boo

• 03:31

How Logical Are You? The Irrationality Illusion Tricks Most

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This video relates a cognitive bias ("irrational" decision) to an optical illusion (picture at 1:45). For more, check out my new book, "The Irrationality Illusion: How to Make Smart Decisions And Overcome Bias" http://amzn.to/1o3FaAg Blog post (text and i

• 07:58

Why Do More Species Live Near the Equator?

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Go to http://Raceforretirement.com and see how the action gap affects you. Follow all of our Peru adventures on this playlist: http://bit.ly/SmartPeru ↓ More info and sources below ↓ Special thanks to Rainforest Expeditions for hosting us! Visit http://ww

• 10:04

The No Cloning Theorem

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Support MinutePhysics on Patreon: http://www.patreon.com/minutephysics Three Blue One Brown: https://www.youtube.com/channel/UCYO_jab_esuFRV4b17AJtAw Why you can’t clone Schrödinger’s cat: this video presents the full proof of the “No Cloning” Theorem in

• 03:04

How To Create A Function From An Equation (example) | Functions | Algebra I | Khan Academy

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Sal find the formula of a function that, given an input value "b," outputs a value "a" that satisfies the equation 4a+7b=-52. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebra-functions/functions-

• 02:40

Interpreting Linear Formulas Example 1 | Algebra I | Khan Academy

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Interpreting a linear formula Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/interpreting_linear_functions/e/interpreting-features-of-linear-functions?ut

• 03:02

Does It Matter Which Color Egg You Buy? (Why Are They Different?)

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Ever wondered why some eggs are different colors? There’s a lot more science behind it than you might think. Dinosaur Eggs Found: What Can We Learn From Them? - https://youtu.be/7ctEUs_idP8 Read More: Buried or Open? Ancient Eggshells Reveal Dinosaur Nest

• 04:05

How To Find Mistakes In One Step Equations | 6th Grade | Khan Academy

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Learn how to spot mistakes in someone else's work as they attempt to solve one-step equations. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-one-st

• 02:19

How To Determine The Domain Of A Modeling Function (example With A Function) | Khan Academy

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Sal determines the domain of a function that models the height of a plant over time. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebra-functions/determining-the-domain-of-a-function/e/interpreting

• 08:52

Linear Models Example 1 | Algebra I | Khan Academy

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• 08:23

Constructing Linear Functions Example 2 | Algebra I | Khan Academy

199 views / 0 likes - added

Linear model for painting Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/linear-functions-modeling/e/constructing-linear-functions-word-problems?utm_sour

• 03:36

Did The Sun Steal Planet Nine From Another Solar System?

311 views / 1 likes - added

Outer space is full of free-floating orphan planets searching for a new home. What would happen if one flew into our solar system? Would NASA Tell Us About Alien Contact? - https://youtu.be/YW3KPiPeKYg How The Mysterious Planet 9 Is Tilting Our Solar Syst

• 03:05

The World's Most Unavoidable Carcinogen

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Subscribe! http://bit.ly/ACSReactions Out in the open air on a beautiful summer day, most people don’t realize that they’re bathing in the world's most common carcinogen – the sun's rays. Ultra violet (UV) rays to be exact. Let’s take a look at how UV ray

• 03:03

Can Air Be A Water Source During A Drought?

326 views / 1 likes - added

Most of the U.S. is suffering a terrible drought, but scientists believe we may be able to pull water from air and survive the way desert creatures do. How Much Of America Is In A Drought? ►►►►http://bit.ly/1RO8Jmw Sign Up For The TestTube Newsletter Here

• 05:14

Here's Why Pneumonia Is Still So Deadly

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The immune system has a whole arsenal of ways to fight off an infection. But with pneumonia, the immune systems response can be lethal. Subscribe to Seeker! http://bit.ly/subscribeseeker Watch more SICK | http://bit.ly/SeekerSICKplaylistWhen it comes to s

• 02:45

The Day After Tomorrow Is Yesterday Riddle. Can You Solve It?

286 views / 0 likes - added

This puzzle is popular on Facebook and many other sites. "When the day after tomorrow is yesterday, then today will be as far from Wednesday as today was from Wednesday when the day before yesterday was tomorrow. What day is today?" Can you solve this tri

• 02:23

This SAT Math Question Has A Mistake

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This question appeared on the October 1980 SAT exam. Like all questions, it was supposed to have exactly one correct answer. However the test-makers made a mistake. Can you figure out what they did wrong? Blog post (text explanation): http://wp.me/p6aMk-4

• 02:35

Interpreting Linear Formulas Example 2 | Algebra I | Khan Academy

220 views / 0 likes - added

Linear equation for file transfer Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/interpreting_linear_functions/e/interpreting-features-of-linear-function

• 03:24

How To Interpret An Expression With Function Notation | Functions | Algebra I | Khan Academy

228 views / 0 likes - added

Sal interprets the expression M(30)-M(0)=100 where M models an account balance over time. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebra-functions/interpreting-function-notation/e/function-nota

• 04:21

How To Write One-step Equations For Word Problems | 6th Grade | Khan Academy

389 views / 0 likes - added

Learn how to write basic equations to model real-world situations. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-super-yoga/e/equations-in-one-vari

• 06:57

When Is Christmas? Mentally Convert Date To Day Of The Week

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January 1, 2016 is a Friday. When will Christmas be in 2016? What about Christmas in 2055? You can do this in your head! Blog post (text explanation): http://wp.me/p6aMk-4qQ Doomsday Rule (previous video): https://www.youtube.com/watch?v=UsStBxY9STw Calcu

• 03:12

Graphing Linear Functions Example 2 | Algebra I | Khan Academy

266 views / 0 likes - added

Graphing equation for filling pool Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/linear-functions-modeling/e/graphing-linear-functions-word-problems?utm

• 01:49

How To Find Two Function Inputs With The Same Output Given Graph (example) | Khan Academy

260 views / 0 likes - added

Sal finds the input value other than -5 for which f(x)=f(-5), given the graph of f. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebra-functions/function-inputs-and-outputs/e/functions_matching_inp

• 04:19

Juno Has Arrived At Jupiter! Now What?

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Juno is now orbiting Jupiter! What is its mission and what are some of the dangers Juno might face during the 20-month expedition? We Found Gravity Waves...AGAIN!!! ???? http://bit.ly/29nE2SP Sign Up For The Seeker Newsletter Here ???? http://bit.ly/1UO1P

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• 06:55

What Are Variables, Expressions, And Equations? | Introduction To Algebra | Algebra I | Khan Academy

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Learn what variables, expressions, and equations really are. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/introduction-to-algebra/feel-for-equations-and-inequalit/e/dependent-and-independent-variable

• 06:35

Constructing Linear Functions Example 1 | Algebra I | Khan Academy

283 views / 0 likes - added

Linear model for ice sheet thickness Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/linear-functions-modeling/e/constructing-linear-functions-word-proble

• 11:42

How to Solve a 3x3 Rubik's Cube In No Time | The Easiest Tutorial

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If you look up the word frustration in the dictionary, youll probably see a picture of a Rubiks Cube. It takes some bright minds only 5 seconds to solve, yet others spend years trying to put it together, eventually giving up. But the truth is that anyone

• 02:36

How To Interpret An Expression With Function Notation | Functions | Algebra I | Khan Academy

277 views / 0 likes - added

Sal interprets the expression P(5) minor P(9) where P models the number of people at the beach over time. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebra-functions/interpreting-function-notation

• 02:27

Checking Ordered Pair Solutions To Equations Example 2 | Algebra I | Khan Academy

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Second example of ordered pair solutions Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/solutions-to-two-var-linear-equations/e/plugging_in_values?utm_so

• 07:11

Graphing Solutions To Two-variable Linear Equations Example 2 | Algebra I | Khan Academy

283 views / 0 likes - added

Graphing solutions to 2 variable linear equations Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/solutions-to-two-var-linear-equations/e/graphing-solutio

• 05:09

Can You Solve The Snake Eyes Probability Riddle?

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You close your eyes and roll a pair of dice. The casino dealer announces that at least one of the rolls is showing a 1.What is the probability that both dice are showing a 1? Watch the video for the solution. (Snake eyes is a term for rolling a pair of 1s

• 05:09

Converting From Slope-intercept To Standard Form | Algebra I | Khan Academy

311 views / 0 likes - added

Converting from slope-intercept to standard form Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/standard-form/e/converting_between_slope_intercept_and_st

• 02:35

Checking Ordered Pair Solutions To Equations Example 1 | Algebra I | Khan Academy

273 views / 0 likes - added

Checking ordered pair solutions to equations Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/solutions-to-two-var-linear-equations/e/plugging_in_values?ut

• 02:34

Converting From Standard Form To Slope-intercept Form | Algebra I | Khan Academy

334 views / 0 likes - added

Standard form to slope-intercept form Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/standard-form/e/slope-from-an-equation-in-standard-form?utm_source=Y

• 07:11

Who Decided We Needed to Take Vitamins? (Part 1 of 3)

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Take your vitamins! You've probably head a parent tell you that, but really, why should we take them to begin with? And who decided vitamins were a good idea? Read More: Vitamins 101: Know What You Need https://www.good.is/articles/know-what-you-need Toda

• 12:21

What's Behind the YouTube Algorithm? (Part 1 of 3)

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There are over one billion users on YouTube with over 400 hours of content released every minute. How does YouTube know what to show you? Part 2 of 3 - https://youtu.be/fJuVlmfW5ns Part 3 of 3 - Coming soon! Read More: How an ex-YouTube insider investigat

• 05:01

219 views / 1 likes - added

How do computer hackers figure out our passwords? Learn about the techniques they use to crack the codes, and what systems protect us. Building Digital Labyrinths To Hide Your Password - https://youtu.be/KFPkmhcSlo4 Sign Up For The Seeker Newsletter Here

• 04:41

How Babies Learn? -- Mind Blow #94

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Vsauce Webby Vote: http://pv.webbyawards.com/2015/online-film-video/video-channels-and-networks/science-education Mind Blow features the latest news in science, technology and amazing! **** SOURCES AND LINKS *** Cyborg Treatment Prevents Seizures (0:00) h

• 05:30

Graphing Linear Functions Example 1 | Algebra I | Khan Academy

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Learn how graph a linear function. This video gives an example of graphing fuel consumption as a function of distance. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-

• 05:55

"Impossible" Logic Puzzle - How Many Liars Are At The Party?

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A party has 100 people who are either liars are truth tellers. Liars always lie and truth tellers always say the truth. After the party you ask each person, "How many truth tellers did you shake hands with?" Each person gives a different answer from 0 to

• 04:57

How your digestive system works - Emma Bryce

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Check out our Patreon page: https://www.patreon.com/teded View full lesson: https://ed.ted.com/lessons/how-your-digestive-system-works-emma-bryce Across the planet, humans eat on average between 1 and 2.7 kilograms of food a day, and every last scrap make

• 07:49

Can You Solve The Viral 9 = 72 Puzzle? The Correct Answer Explained

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This problem has been shared millions of times on Twitter/Facebook with the claim "99% fail" to solve it and that only a genius could find the correct answer. If 9 = 72, 8 = 56, 7 = 42, 6 = 30, 5 = 20, then 3 = ? In this video I explain what many people b

• 05:39

Can You Solve A 5th Grade Problem From China? Find The Area Of ABCD

285 views / 0 likes - added

Thanks to Eric from Miami for suggesting this problem and sending a solution! The diagram shows a quadrilateral ABCD with the values for some angles and the length of AB. Can you figure out the area of ABCD? Subscribe: https://www.youtube.com/user/MindYou

• 06:05

Could These Numbers Unravel New Dimensions in Space?

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These multidimensional number systems are helping us explain the laws of nature. Here’s how. Can Hawking’s Black Hole Paradox Be Solved With Fuzzballs? - https://youtu.be/esPa1tVSjew Read More: The Peculiar Math That Could Underlie The Laws of Nature http

• 03:38

Could Galactic Walls Prove We're Wrong About The Universe?

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Astronomers have just found the biggest galaxy wall yet. What is a cosmic great wall, and how do we find them? Does This Discovery Prove There's Another Universe? ►►►►http://bit.ly/25uz6Cd Sign Up For The TestTube Newsletter Here ►►►► http://bit.ly/1myXbF

• 15:15

Moving Faster Than The Speed Of Light? Special Relativity Velocity Addition Formula

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If train A is moving towards train B, and each train moves at 75% the speed of light (relative to the ground), will an observer on train A think that train B is moving at 150% the speed of light? But nothing moves faster than the speed of light, so what i

• 04:21

Here's Why We Can't Live Stream From Mars

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Most of us on earth only get to see space through the pictures spacecrafts take up there. How exactly do those pictures get back to earth? How We Know NASA Didn't Fake Neil Armstrong's First Steps - https://youtu.be/OxoSnXZTtr4 Everything You Know About P

• 04:53

Can You Solve The Friendship Riddle?

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In a group of 6 people, you might find that some people are friends on Facebook, or you might find out that no one is friends on Facebook. Show that there is always a group of 3 people in which either: (a) all 3 people are mutual friends or (b) the 3 peop

• 06:01 Popular

Can You Solve The Viral 1 + 4 = 5 Puzzle? The Correct Answer Explained

2,511 views / 0 likes - added

This problem was shared on Facebook with the claim that only one in a thousand could figure it out. It went viral and generated over 3 million comments. Here is the problem. If 1 + 4 = 5, 2 + 5 = 12, 3 + 6 = 21, what is 8 + 11 = ? This video presents what

• 03:32

Why Do Humans Have Such Big Brains?

298 views / 1 likes - added

Humans have some of the biggest brains and it's not only for problem solving. Why we have big brains might just surprise you... How Texting Affects Your Brain - http://bit.ly/2cb9uWU Sign Up For The Seeker Newsletter Here - http://bit.ly/1UO1PxI Read More

• 03:21

Can You Solve A Puzzle That Fooled Richard Feynman?

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What is the radius of the circle, in simplest terms involving a, b, and c? I read that even the great mind Richard Feynman made a mistake. Watch the video to learn the common mistake and what the correct answer is. Source Feynman story http://web.media.mi

• 03:28

Flower Math Problem - Adults Stumped By Question For Kids In China

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This problem is said to come from a test given to a Chinese kindergarten class (5 year olds). It was posted online and caused a lot of debate as adults were stumped about the correct answer, some saying it is impossible. Can you figure it out? This video

• 04:15

The Future Of Warfare: Laser Cannons & Drone Armies

185 views / 0 likes - added

Scientists recruited by the government have been developing some pretty crazy technology. What will weapons look like in the future? How Ex-Nazis & Jewish Scientists Got The U.S. To The Moon - https://youtu.be/VW2KTX0zg5g Sign Up For The Seeker Newsletter

• 01:49

This Matchstick Puzzle Is

267 views / 1 likes - added

This classic matchstick/toothpick puzzle is making the rounds because it is supposedly "extremely hard" for adults. Can you make 3 squares by moving 3 matchsticks? You cannot break any of the sticks, the resulting squares must be of equal size, and each t

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• 03:59

What Drugs Do You Need to Survive in Space?

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Traveling through space is rough on an astronaut’s body. What drugs do they take to cope? How One of NASA’s Deep Space Challenges Could Be Solved in the Ocean | The Swim - https://youtu.be/ogpE0mem9xE Read More: Preventing Bone Loss in Space Flight with P

• 03:03

Sounds of the Sun

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Data from ESA (European Space Agency) and NASA’s Solar and Heliospheric Observatory (SOHO) has captured the dynamic movement of the Sun’s atmosphere for over 20 years. Today, we can hear the Sun’s movement — all of its waves, loops and eruptions — with ou

• 04:10

Could We Create A Livable Atmosphere On The Moon?

329 views / 0 likes - added

Until recently, scientists thought the moon had no atmosphere, but it actually does! What's it made of and can it be made to support life? How the Lunar Module Launched from the Moon Without a Flame- https://youtu.be/QsLtAUb1-Lw Why Does Earth Only Have O

• 03:10

Will This Solve Organ Transplant Rejection Forever?

384 views / 0 likes - added

Currently we must have an exact match to receive an organ from a donor, especially kidneys, but that may no longer be an issue. Subscribe to TestTube Plus ►►►► http://bit.ly/1RrPZ5V Sign Up For The TestTube Newsletter Here ►►►► http://bit.ly/1myXbFG Read

• 03:13

Pollution Is Changing The Sex Of These Animals!

300 views / 0 likes - added

What if our gender was determined by external temperature at a certain point in fetal development? For these animals, this is the reality! How Does Asexual Reproduction Work? - http://bit.ly/28NW9Cr Sign Up For The Seeker Newsletter Here - http://bit.ly/1

• 03:17

Can YOU Solve It? This Question Stumped 75% Of PhD Economists

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Introductory economics courses cover the concept of an opportunity cost. Can you figure out the opportunity cost for the problem in the video? This video presents a question that surprisingly more than 75% of PhD economists did not answer correctly. Paper

• 05:48

What Is The Area? "You Should Be Able To Solve This"

120 views / 0 likes - added

Thanks to Reio in Romania for emailing me this fun problem! What is the area? This puzzle was shared with the tagline "you should be able to solve this." Solution to 5th grade Chinese challenge problem https://youtu.be/OuJQaxZvlYs My blog post for this vi

• 04:02

How Do Spacesuits Keep Astronauts Safe From The Vacuum Of Space?

257 views / 0 likes - added

There were many iterations of the spacesuit before astronauts started wearing what they do today, but how do they work? How Do Astronauts Poop in Space? ►►►► http://bit.ly/1SBdlNe Sign Up For The TestTube Newsletter Here ►►►► http://bit.ly/1myXbFG Read Mo

• 07:25

Can You Solve The Race To December 31 Riddle?

266 views / 0 likes - added

Here's a fun game you can play with another person. The game starts on January 1. Each of two players takes turns calling out another date. The new date has to be a later date in the year with either the same month OR the same day (from January 1, a playe

• 05:05

Can We Perform Surgery in Space?

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Dr. George Pantalos and his team pioneer futuristic surgical tools for operations on astronauts and test them on NASA's zero-gravity plane. Experience intense, unique, and sometimes dangerous moments with scientists working in the field, as they explain f

• 02:37

Plate Tectonics Explained

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How do plate tectonics REALLY work? We're now on Patreon! Please support us at: http://www.patreon.com/minuteearth And subscribe! - http://www.youtube.com/user/minuteearth?sub_confirmation=1 Thanks to our Patreon patrons: - @AntoineCoeur - salar tel - @To

• 13:40

BEST Way To Play Memory (Card Game) - WIN Using Math

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The card game of memory (aka concentration) is a children's game to test visual recall. Strategically you can figure out the best move by doing probability calculations. This video explains the best possible way to play the game mathematically. You can le

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• 05:41

Scientists Trapped Electrons In a Quantum Fractal (And It's Wild!)

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Fractals aren’t just crazy cool mathematically infinite shapes. They might just have the capacity to revolutionize modern electronics as we know it. Thumbnail image courtesy of Sander Kempkes. There’s a Subterranean Biosphere Hiding in the Earth’s Crust a

• 15:19

15 Puzzles That Will Keep You Up All Night

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How to Make Yourself Smarter. Studies have shown that solving riddles and puzzles is exceptionally good for your brain. It sharpens your mind, improves your memory, and teaches you to pay attention to small details. Get ready to train your brain and impre

• 09:11

Can You Solve The Rectangle Ratio Puzzle? The Surprising Answer

326 views / 0 likes - added

Start with a unit square (a rectangle with both sides equal to 1, call it R1). Attach a rectangle of area 1 to its right side, then attach a rectangle of area 1 to its top. The border of this new shape is another rectangle, call it R2. We can repeat the p

• 08:19

Can You Solve The Spies Sharing Secrets Puzzle?

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After a successful mission, each of N spies obtains a unique secret. By protocol, the spies share secrets by a series of phone calls between 2 spies at a time. During a call, a spy can share all the secrets the knows, including secrets learned from previo

• 10:13

Focus & Concentration: Crash Course Study Skills #5

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Sign up for your FREE trial of The Great Courses Plus here: http://ow.ly/PhPe30egcrb Have you ever noticed how easy it is to get distracted while studying – even when you know you really don’t have time for Facebook, Snapchat, Cookie Clicker, or whatever

• 05:57

Can You Solve This 6th Grade Geometry Problem From Singapore? The Area Of A "Claw"

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This problem was given to Primary 6 (age 11-12) students in Singapore. What is the area of the shaded region in the video, which consists of the region bounded by 4 quarter circles in a 3x3 grid of squares, and each square has a side length of 4? The shad

• 08:43

How Close Are We to Mining in Space?

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Asteroids hold untold riches when it comes to untapped resources. We are getting closer to harvesting materials from these celestial objects, but how close are we to mining asteroids? Subscribe to Seeker! http://bit.ly/subscribeseeker Watch more How Close

• 06:24

Can You Solve The Missing Sock Puzzle?

225 views / 0 likes - added

A statistician keeps a simple wardrobe. He only purchases pairs of black socks and white socks, and he keeps all of the socks in a pile in the drawer. Recently one of the socks was lost in the laundry. The socks have a mathematical property. If you select

• 03:51

Can You Solve This MIT Admissions Question? Geometry Problem, 1869

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The Massachusetts Institute of Technology (MIT) is one of the top ranked universities in the world. This question appeared on its admissions exam nearly 150 years ago. "The perpendicular dropped from the vertex of the right angle upon the hypotenuse divid

• 03:16

Can You Solve This 8th Grade Geometry Problem? 75% Got The Wrong Answer

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What is angle A in the star-shaped figure? This problem appeared on the 1999 AMC 8 test (intended for 8th grade students in the US). Approximately 75% of test-takers did not mark the correct response. Can you figure it out? Watch the video for a solution.

• 08:05

Can You Solve The Hardest Easy Geometry Problem?

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In the figure, what is the value of angle x? This problem is known as Langley's Adventitious Angles. It is also known as the hardest easy geometry problem because it can be solved by elementary methods but it is notoriously difficult to work out. Can you

• 03:48

Can You Solve This Harvard Admissions Question? Algebra Problem, 1869

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The Harvard admissions exam in 1869 included this algebra problem: "A man bought a watch, a chain, and a locket for \$216. The watch and locket together cost three times as much as the chain, and the chain and locket together cost half as much as the watch

• 05:33

102 views / 0 likes - added

NASA hasn't sent humans back to the Moon in almost 50 years, but in the next decade, the agency has ambitious plans for a lunar revival. Check out the entire Apollo series here!: https://bit.ly/2ApSfg9 Read More: What’s Really Changed—and What Hasn’t—Abou

• 11:27

Can You Solve The Viral 11x11 = 4 Puzzle? The Correct Answer Explained

584 views / 1 likes - added

If 11x11=4 and 22x22=16, what is 33x33=? This puzzle has been shared with the claim that only geniuses can solve it. It has gotten millions of views on the internet and Facebook as people have debated the correct answer. In this video I present what many

• 04:04

Can Math Explain How Animals Get Their Patterns?

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How Alan Turing's Reaction-Diffusion Model Simulates Patterns in Nature Thanks to http://www.audible.com/minuteearth for sponsoring this video. Asparagus Pee Survey Results: https://goo.gl/8x7abL ___________________________________________ If you liked th

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• 02:51

The Horse Horseshoe Boots Viral Algebra Problem - The Correct Answer Explained

572 views / 1 likes - added

A lot of people are arguing over the correct answer to this algebra problem involving horses, horseshoes, and boots. A Facebook post with this problem has over 500,000 comments. Can you figure it out? In this video I explain the correct answer. Blog post:

• 05:33

What is 6÷2(1+2) = ? The Correct Answer Explained

461 views / 0 likes - added

What is 6÷2(1+2) = ? This problem went viral and generated millions of comments on Facebook, Twitter, YouTube and social media sites. I explain how to get the correct answer by using the modern interpretation of the order of operations. I also explain how

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• 05:26

Can You Solve The Red Ball Lottery Puzzle?

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(Same video without the music: https://youtu.be/sz5oLEpc8xE) This problem involves 100 red balls, 100 blue balls, and 2 urns. First you distribute all the balls between the 2 urns, placing at least 1 ball in each urn. Next, you select an urn at random, an

• 05:58

Is Sugar a Drug?

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Here’s a sweet idea: Subscribe! http://bit.ly/iotbs_sub Tweet this video ⇒ http://bit.ly/OKTBSsug Share on FB ⇒ http://bit.ly/OKTBSsugFB ↓ More info and sources below ↓ Want to wear your love for science? We’ve got merch: http://dftba.com/besmart American

• 04:13

Can You Solve This Grade 12 Geometry Problem From Australia? The Marshmallow Chocolate Puzzle

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A marshmallow has the shape of a cylinder with diameter 5 and height 3. A dessert is made with 24 marshmallows: there are two stacked layers of marshmallows, and each layer has 3 rows of 4 marshmallows. The gaps between the marshmallows are filled with ch

• 04:01

Engineers Are Making Squishy, Bio-Inspired Robots, Here’s How They Work

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Scientists are looking to nature to inspire the next generation of robots. Here’s what they’ve come up with. Could the Biggest Ocean Recording Ever Made Redefine Marine Science? | The Swim - https://youtu.be/-GWVmk-U-kk Read More: Soft Robotics: Challenge

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• 03:09

Can You Solve The Marriage Logic Problem? 80% Fail

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Surveys have found 80 percent get this logic problem wrong. Alice is looking at Bob, and Bob is looking at Charlie. Alice is married; Charlie is not. Is a married person looking at an unmarried person? Answer choices are A) Yes, B) No, and C) Cannot be de

• 03:05

215 views / 0 likes - added

Anna's Snot Video: https://www.youtube.com/watch?v=shEPwQPQG4I Subscribe! http://bit.ly/ACSReactions It’s peak cold and flu season, and mucus is making many of our lives miserable. But despite being a little icky, phlegm gets a bad rap. This germ-fighting

• 03:54

What's The Best Soup Can Size? The Optimal Cylinder Puzzle

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A cylindrical can with volume V can be made in different ways. The cylinder can be wide and short (large radius and small height), or it can be narrower and taller (small radius and larger height). Which shape uses the least material? That is, which can h

• 04:16

How Much Heat Can Your Body Take Before Killing You?

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Our world is getting undeniably hotter, and parts of it could soon be too hot for human survival. But how could hot temperatures actually kill you? Waves Can Tell Us A Lot About Climate Change, But You Have to Catch Them First - https://youtu.be/toeoYNQNZ

• 07:40

Can You Solve The 21 Flags Game From Survivor?

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Contestants on the TV show "Survivor" faced off in a series of challenges for a grand prize of \$1 million. Most of the challenges were physical like hiking many miles or diving underwater. But one challenge was mathematical. The game had 21 flags and cont

• 07:21

Can You Solve The Magical Pond Puzzle?

288 views / 1 likes - added

(Same video with music: https://youtu.be/nF-Gpk0ZpRk) You visit a shrine that has 3 temples. Before each temple, you have to swim in a magical pond. Your path is pond-temple1-pond-temple2-pond-temple 3. Each time you swim, the pond magically triples the n

• 02:37

Adults Stumped By Maths Questions For 15 Year Olds. Can You Solve Them?

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How hard are math tests? A survey asked 2,000 UK adults to answer sample GCSE test questions intended for 15 year old students. On average, the survey questions were missed by about 40% of adults. Can you solve them? The video presents 2 questions that ma

• 02:34

The Worldwide Phenomenon That's Shrinking Animals

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Animals across the globe are shrinking, and scientists think climate change might be to blame. This Boring Taxonomical Change Is Making Dinosaur Nerds Go Crazy - https://youtu.be/GM7SOweWAHE Sign Up For The Seeker Newsletter Here - http://bit.ly/1UO1PxI W

• 02:57

Can You Solve This Crazy Equation? Ramanujan's Radical Brain Teaser

279 views / 0 likes - added

In 1911, Srinivasa Ramanujan posed this problem involving an infinite nested radical (a never-ending expression that has square roots inside of square roots). Can you figure out how to simplify the equation? The video presents an intuitive solution. Techn

• 05:27

Why Don’t We Have Functional Biofuel Yet?

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Alternative fuels, like ethanol and algae, have been around for years, yet there have been obstacles hindering these biofuels' take over the market. Here's why. Are We Getting Closer to Thorium Nuclear Fuel? - https://youtu.be/bcjYwxrUERg Read More: Biofu

• 08:51

The Viral Balloon Puzzle - The REAL Answer Explained (Using Ph.D. Level Math)

225 views / 0 likes - added

They say only geniuses can solve this puzzle, and this time they are correct. Thanks to all patrons! Special thanks to: Shrihari Puranik Yildiz Kabaran Kyle My blog post for this video https://wp.me/p6aMk-82U Sources https://puzzling.stackexchange.com/que

• 05:52

Can You Solve The "MEANEST" SAT Test Question Ever?

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On the SAT exam, you have about 2 minutes to read and solve each math question. This one about averages can send you in a loop, unless you approach it systematically. In the video I also explain a shortcut to help you solve this type of problem quickly. S

• 03:49

The Science Nobel Prizes Explained in 3 Minutes

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Science that’s worthy of a Nobel Prize is bound to be complicated. Here’s everything you need to know about this year’s winners. How To Win A Nobel Prize - https://youtu.be/4a1_3aW-VD8 Read More: The Nobel Prize in Physics 2018 https://www.nobelprize.org/

• 18:44

A Dragon Torched My Hand (How Do VR Haptic Gloves Work?) - Smarter Every Day 191

141 views / 0 likes - added

Click here to subscribe: http://bit.ly/Subscribe2SED Get a personalized DNA genotype test a&d read about new data FDA now allows 23andMe to release: http://www.23andme.com/smarter ⇊ Click below for more links! ⇊ There are tons of things I had never consid

• 04:22

Are Those Your Lips or Feet? How Your Brain Rewires Itself After Amputation

107 views / 0 likes - added

From the top of your head to the bottom of your feet, your brain contains a map to your entire body. But what happens to that map if you lose a limb? Scientists Want to Transplant a Human Head, Here's Why That's a Bad Idea - https://youtu.be/CMHhF5N1FPY G

• 04:11

Why Don't We Launch More Rockets From Airplanes?

200 views / 0 likes - added

NASA recently launched a spacecraft horizontally from an airplane, rather than vertically from the ground. Should we launch more like this? Why Did The Antares Rocket Explode? - https://youtu.be/Nok2uw3cTig Sign Up For The Seeker Newsletter Here - http://

• 08:27

Math Tricks and the Joy of Math I The Great Courses

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Try a free month trial of The Great Courses Plus and watch Joy of Mathematics here: https://www.thegreatcoursesplus.com/special-offer?utm_source=US_OnlineVideo&utm_medium=SocialMediaEditorialYouTube&utm_campaign=136229 Welcome to the Joy of Math. I'm Arth

• 09:07

How Close Are We to Controlling Machines With Our Minds?

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From outsmarting the self check-out to providing options for patients with communication disorders, merging mind with machine could be the next frontier for humanity. How close are we to controlling machines with our minds?Read more:This New Mind-Controll

• 09:50

Can You Solve This 6th Grade Geometry Problem From China?

578 views / 1 likes - added

What is the total area of the red spots? The diagram involves a rectangle with dimensions of 10 and 20. Inside the rectangle one of its diagonals is connected. There are two circles of equal size that are tangent to each other and the rectangle. The video

Featured
• 05:50

Why Are People Eating Poop? | What The FAQs | NowThis

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Turns out eating someone else's poop can actually be good for your health. On this episode of What The FAQs, Andy explores the world of fecal transplants. Subscribe to NowThis Future: https://go.nowth.is/Future_Subscribe A fecal microbiota transplant is a

• 05:50

Why Are People Eating Poop? | What The FAQs | NowThis

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Turns out eating someone else's poop can actually be good for your health. On this episode of What The FAQs, Andy explores the world of fecal transplants. Subscribe to NowThis Future: https://go.nowth.is/Future_Subscribe A fecal microbiota transplant is a

• 06:18

Can You Solve The Diluted Wine Puzzle?

245 views / 1 likes - added

A servant has a method to steal wine. He removes 3 cups from a barrel of wine and replaces it with 3 cups of water. The next day he wants more wine, so he does the same thing: he removes 3 cups from the same barrel (now with diluted wine) and replaces it

• 03:34

Using GPS to Get Around Is Making Us Dumber

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GPS services have made getting from point A to point B a lot easier, but what effects does this have on our brains? How Do Animals Find Their Way Home Without GPS? - https://youtu.be/5qHRxvIqHWw Sign Up For The Seeker Newsletter Here - http://bit.ly/1UO1P

• 08:42

Lens of Time: Secrets of Schooling | bioGraphic

188 views / 0 likes - added

Shimmering schools of fish have dazzled scientists for centuries with their synchronized maneuvers. Now, high-speed video is revealing how—and why—they do it. ___ Originally published on bioGraphic: http://bit.ly/2ftce5K Produced by Spine Film

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• 05:09

How Ingenious Animals Have Engineered Air Conditioning

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Thanks to non-profit edX.org for sponsoring this video. Go to http://bit.ly/edXSmart to learn more about Harvard’s Architectural Imagination course or other classes from some of the top universities in the world. ↓↓↓More info and sources below ↓↓↓ Here’s

Featured
• 06:32

Why aren't plants black?

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Why are plants green? Is there a reason plants evolved to be green, globally? What does it have to do with the color of the sunlight coming down through our atmosphere? http://physicsgirl.org/ http://twitter.com/thephysicsgirl http://facebook.com/thephysi

• 03:12

Should You Actually Drink Your Own Pee To Survive?

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Many survivalists have cited urine as a great way to avoid being dehydrated in extreme situations but that isn't completely true. Despite being composed of almost 95% water, pee still has waste and trace amounts of bacteria that could make a bad situation

• 04:21

Since Mass Exists, Can There Be Negative Mass?

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Media outlets claim researchers have created negative mass, but what they really created is negative 'effective' mass, which is a little different. Black Holes And Gravitational Waves Might Help Us Find Dark Matter - https://youtu.be/C68b9EGksuI Sign Up F

• 03:17

Why Bathroom Sensors Suck

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Despite being introduced for hygiene and ease, automatic toilets can be extremely frustrating, either flushing too soon or not at all. We found out why bathroom sensors malfunction so often and a few simple fixes for the issues. Tech Insider tells you all

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