Search Results: "multicellular algae"

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03:38
The momentous transition to multicellular life may not have been so hard after all

522 views / 0 likes - added 5 years ago

Single cells had many of the genes and functions needed for complex life to evolve. Learn more: https://scim.ag/2Kjutt7 Credits: producer/editor/script/narrator Nguyen Khoi Nguyen supervising producer Sarah Crespi original story Elizabeth Pennisi graphics
04:52 Popular
We Can Power The World With Algae!

1,302 views / 0 likes - added 7 years ago

Scientists are always looking for alternatives to fossil fuels, but what about algae? Can algae be used to create biofuel? How Algae Could Change The Fossil Fuel Industry - https://youtu.be/yCNkmi7VE0I Sign Up For The Seeker Newsletter Here - http://bit.l
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05:29
SpaceX Just Sent Algae to the ISS, Here's How It'll Power Deep Space Missions

582 views / 0 likes - added 5 years ago

SpaceX has taken over refueling missions to the ISS, and they're bringing some exciting new experiments along the way. NASA Just Launched a Mission to Mars to Dig Deep Inside the Planet’s Core - https://youtu.be/MusWmN1i5vE Read More: Plants, Algae and Ot
03:24 Popular
Attack Of The Killer Algae - Eric Noel Muñoz

871 views / 1 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/attack-of-the-killer-algae-eric-noel-munoz As benign as it may look up close, the tiny seaweed Caulerpa taxifolia can wreak quite a bit of havoc on coastal ecosystems. This super algae is very adaptable; it also
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Shrimp made from algae that looks and tastes like the real thing

404 views / 0 likes - added 5 years ago

Shrimp, the United States’ most popular seafood, is notorious for being farmed using practices that destroy the environment. New Wave Foods, a startup based in San Francisco, has set out to create a sustainable replacement. The key ingredient in its "shri
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How Plastic Made With Algae Can Clean Waterways | World Wide Waste

207 views / 0 likes - added 2 years ago

A tech startup can turn harmful algae into plastic foam, which could help clean up waterways and reduce demand for plastic. Mixing algae into plastic also traps carbon inside the products, which could be an important tool for fighting climate change. We w
03:52
Would you ever eat algae? Chances are, you already have.

116 views / 0 likes - added 2 years ago

Long a background ingredient, algae are appearing on plates more and more as the star of the culinary show. They are versatile in taste and easy to grow. And they just might help us face an uncertain food future.
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Flip-Flops Made From Plants And Algae Can Help Reduce Plastic Pollution | World Wide Waste

293 views / 0 likes - added 3 years ago

Researchers at the University of California San Diego have figured out how to turn algae into flip flops. They founded a startup to sell the shoe, but face a challenge in getting their invention mass produced: There aren't enough algae farms to support th
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Genetically Engineered Cancer-Fighting Algae

714 views / 0 likes - added 8 years ago

Learn how scientists are fighting cancer... with algae! Hosted by: Michael Aranda ---------- Dooblydoo thanks go to the following Patreon supporters -- we couldn't make SciShow without them! Shout out to Justin Ove, David Campos, Chris Peters, Philippe vo
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Why Are You Multicellular?

796 views / 0 likes - added 8 years ago

Start your Audible trial today: http://www.audible.com/ok Tweet this ⇒ http://bit.ly/OKTBSmc Share on FB ⇒ http://bit.ly/OKTBSmcFB ↓ More info and sources below ↓ Check out Destin’s video on Smarter Every Day: “DEVIL FACIAL TUMOR DISEASE” https://www.yout
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02:48
Glowing Algae Water Fountain

694 views / 0 likes - added 7 years ago

A simple idea for continuous, organic, relaxing light using bioluminescence. CHECK OUT CALEB'S AWESOME PROJECT: http://www.thecontrollerproject.com/ HERE IS WHERE I BOUGHT THE ALGAE FROM: http://empco.org/edu/index.php/pyrocystis-fusiformis-11.html I make
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Algae-power: a natural energy supply

146 views / 0 likes - added 1 year ago

Read the full story here:https://bit.ly/AlgaeComputingScientists have managed to power a microprocessor continuously for a year using ALGAE! The new system has potential as a renewable way to power large numbers of small devices as part of the Internet of
01:20
Could This Billion-Year-Old Fossil Be The Oldest Multicellular Animal on Record?

208 views / 0 likes - added 2 years ago

A minuscule fossil found in Scotland could reveal an important chapter in the history of life on Earth.
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This robot made of algae can swim through your body

529 views / 0 likes - added 6 years ago

Thanks to magnets Bio-hybrid bot could one day deliver drugs or do surgery. Learn more: http://scim.ag/2jfzIJD
03:18 Popular
Algae Fuel Could Change the World | World's Strangest

778 views / 1 likes - added 9 years ago

This literally green technology could completely revolutionize the transportation industry. | For more World's Strangest, visit http://www.sciencechannel.com/tv-shows/worlds-strangest/#mkcpgn=ytsci1 Catch World's Strangest Tuesdays at 8/7c on Science Chan
12:17 Popular
Old&Odd: Archaea, Bacteria&Protists - CrashCourse Biology #35

829 views / 1 likes - added 9 years ago

Hank veers away from human anatomy to teach us about the (mostly) single-celled organisms that make up two of the three taxonomic domains of life, and one of the four kingdoms: Archaea, Bacteria, and Protists. They are by far the most abundant organisms o
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Why are coral reefs turning white?

294 views / 0 likes - added 2 years ago

Coral reefs are home to an abundance of wildlife and help protect coastal communities against floods and storms. Their bright vibrant colors come from algae living in coral. But rising ocean temperatures stress out coral and cause them to expel the tiny o
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The Lives of Nonvascular Plants: Alternation of Generations - Crash Course Biology #36

1,385 views / 0 likes - added 9 years ago

Hank introduces us to nonvascular plants - liverworts, hornworts&mosses - which have bizarre features, kooky habits, and strange sex lives. Nonvascular plants inherited their reproductive cycle from algae, but have perfected it to the point where it i
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Solar-Powered Slugs

220 views / 1 likes - added 3 years ago

We need to eat food to fuel our bodies, but this special slug, called emerald elysia, can make food using sunlight - just like plants do!----------Love SciShow Kids and want to help support it? Become a Patron on Patreon: https://www.patreon.com/scishowIf
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Today I Learned a Sloth Sleeps 20 Hours a Day

144 views / 0 likes - added 1 year ago

As the slowest mammal in the world, sloths sleep up to 20 hours a day, and even when theyre awake theyre so slow that algae grows on their hair. Find out more about these drowsy tree-dwellers in Best of Orlandos latest Today I Learned video featuring Mila
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Look At This Bright Pink Lake!

939 views / 0 likes - added 7 years ago

What on Earth? | Tuesdays at 9/8c on Science Full Episodes Streaming FREE on Science GO: https://www.sciencechannelgo.com/what-on-earth/ This isn't an optical illusion. This lake on Middle Island is actually pink! You can thank the algae in the lake for t
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The Bacteria That Made Life Possible Are Now Killing Us

544 views / 0 likes - added 4 years ago

Thanks to the St. Croix Watershed Research Station for sponsoring this video! To learn more about their work, visit https://www.smm.org/scwrs/.Aquatic cyanobacteria first oxygenated earths air, making human life possible; now, due to our actions, cyanobac
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These Solar-Powered Carnivorous Flatworms Divide and Conquer | Deep Look

22 views / 0 likes - added 3 weeks ago

Tiny marine flatworms called acoels hunt for prey in coral reefs. They're referred to as plant-animals'' because they've got a partnership with photosynthetic algae that live inside of them. But this acoel's real superpower is its ability to regenerate an
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A peculiar phenomenon covered a Chinese lake with 'snow' in the middle of the summer

681 views / 2 likes - added 6 years ago

A Yuncheng City salt lake in China's Sanxi Province is covered with white foam that looks like snow in the middle of the summer. While scientists don't know for sure what causes all the foam, experts think it's a result of a unique mixture of algae and pl
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Craig of the Creek | Stuck In The Creek | Cartoon Network UK

386 views / 0 likes - added 3 years ago

Craig, Kelsey and JP get stuck in deep algae in the creek and have to send Mortimor to go and get help.[ https://goo.gl/hRAVDf ] Subscribe to the Cartoon Network UK YouTube channel! [ http://www.cartoonnetwork.co.uk ] Visit the Cartoon Network UK website!
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Simple Animals: Sponges, Jellies,&Octopuses - Crash Course Biology #22

833 views / 0 likes - added 9 years ago

Hank introduces us to the "simplest" of the animals, complexity-wise: beginning with sponges (whose very inclusion in the list as "animals" has been called into question because they are so simple) and finishing with the most complex molluscs, octopuses a
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What Color Does This Video Taste Like?

500 views / 0 likes - added 6 years ago

Can you hear colors? Can you taste sound? THIS is synesthesia. Watch More: When Did Multicellular Life Begin? ►►►► https://www.youtube.com/watch?v=I2ZHMeF9dgA Support Life Noggin on Patreon: https://www.patreon.com/LifeNogginStudios Official Website: http
Jellyfish Sunbathing | BBC Earth

176 views / 0 likes - added 2 years ago

The Cassiopea isn't just normal jellyfish - they are solar powered, photosynthetic jellyfish, thanks to the symbiotic algae that live on them.Subscribe: http://bit.ly/BBCEarthSub Watch more videos from BBC Earth: Planet Earth http://bit.ly/PlanetEarthPlay
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Toys Are Made Of Recycled Cigarette Butts

287 views / 0 likes - added 2 years ago

Cigarette butts are the most littered item in the world trillions get dropped every year. One company in India has found a way to recycle them into plush toys and mosquito repellent. MORE WORLD WIDE WASTE VIDEOS:How Vegan Leather Is Made From Mangoes | Wo
Coral Predators Cam powered by EXPLORE.org

145 views / 0 likes - added 1 year ago

This camera displays a variety of coral predators. Although you would think fish and other animals that eat and attack coral would be harmful, it can actually be quite beneficial to the health of the reef and the individual corals. Parrotfish dive headfir
What is an Animal? Crash Course Zoology #1

203 views / 1 likes - added 2 years ago

Check out Animal IQ on PBS Terra! https://youtu.be/Ejhbr_t7BlcSo what is an animal anyway? In our inaugural episode of Crash Course Zoology, well endeavor to answer just that because as it turns out, its complicated! But before we get there well need to i
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Human Tissue Experiments on the ISS Could Advance 3D Printed Organs

450 views / 0 likes - added 5 years ago

Seeker host Maren Hunsberger sits down with NASA Scientist Dr. Liz Warren to talk about the amazing science happening on the ISS, why microgravity is the ideal condition for health experiments, and how this all might lead to 3D printed body parts. SpaceX
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One of the Dirtiest Jobs In San Francisco Is Dealing With Food Waste | World Wide Waste

215 views / 0 likes - added 2 years ago

San Francisco pioneered the nation's first citywide composting program. Now the city composts and recycles more trash than it sends to the landfill, saving water, space, and reducing greenhouse gas emissions. Why aren't other cities doing the same?MORE WO
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Swim Peacefully with Thousands of Jellyfish in Palau

662 views / 2 likes - added 7 years ago

On Eil Malk Island in Palau, you can swim with jellyfish without getting stung. This marine lake was once connected to the ocean, but as the island changed, it was cut off. Now in isolation, it's filled with a jellyfish species found nowhere else. With no
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04:05
Taking Pictures With the Sun!

292 views / 0 likes - added 3 years ago

Did you know there's a way to make art using the light from the sun? It's called a cyanotype, and Mister Brown is going to tell you all about how they work, and how to make your own!----------Love SciShow Kids and want to help support it? Become a Patron
05:48
How Used Chopsticks Are Turned Into Tables, Tiles, And Other Furniture | World Wide Waste

249 views / 0 likes - added 3 years ago

People around the world discard at least 80 billion pairs of chopsticks every year. ChopValue, a Canadian company, wants to give those wood utensils a second life as shelves, furniture, and countertops.MORE WORLD WIDE WASTE VIDEOS:How Banana Waste Is Turn
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12 Year Old Terrarium - Life Inside a closed jar, Over a decade in isolation

360 views / 0 likes - added 3 years ago

In this video we take a look at the terrarium my brother made during his childhood. This terrarium was made between 2007 - 2008. This makes the terrarium at least 12 years old. Inside there is a variety of organisms. All of which have persisted within the
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How These Handmade Tiles Lock Up Air Pollution | World Wide Waste

469 views / 1 likes - added 2 years ago

A startup in India makes cement tiles using the black carbon that causes smog. But can new building materials help clear the air in a country with some of the world's worst pollution?MORE BUSINESS INSIDER VIDEOS: How Old Tires Are Turned Into Electricity
06:18
Racing to Save Dying Coral Reefs

405 views / 0 likes - added 5 years ago

While they might be easily mistaken for rocks or plants, coral reefs are actually colonies of animals. These small but mighty creatures cover only a percent of the ocean floor, yet they constitute one of Earth’s oldest and most important ecosystems—servin
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How 3.5 Million Oysters Are Harvested At This Virginia Farm Every Year | Big Business

263 views / 0 likes - added 3 years ago

Located on Virginias Mobjack Bay, this aquaculture farm is one of the largest on the East Coast. We went inside Ward Oyster Company to see how it harvests 3.5 million oysters every year bringing them from algae tanks to your plate.MORE BIG BUSINESS VIDEOS
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How Bricks Made From Milk Cartons Can Help Typhoon Victims | World Wide Waste | Business Insider

214 views / 0 likes - added 1 year ago

One of the world's largest carton manufacturers is trying to reclaim some of the 192 billion containers it makes every year. It's working with Thai schoolchildren to turn milk cartons into bricks and roofing sheets that can benefit victims of natural disa
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What Would Happen If All The Bugs Died?

730 views / 1 likes - added 6 years ago

Insects might seem annoying, but what happens if they all died off? Watch More: When Did Multicellular Life Begin? ►►►► https://www.youtube.com/watch?v=I2ZHMeF9dgA Get your exclusive Life Noggin merch: http://www.keeponthinking.co Support Life Noggin on P
06:13
What melting sea ice means for life in the Arctic

454 views / 0 likes - added 6 years ago

Light is flooding into the Arctic. There will be winners and losers. That’s what brought an international group of scientists to the Barents Sea to investigate how plant and animal life will adapt to the new normal. Two key factors that govern the arctic
04:49 Popular
Earth's Magnetic Field Is Going To Flip, Here's How We Know

1,248 views / 0 likes - added 7 years ago

Scientists are using clues from ancient artifacts to help them predict the future of the magnetic field. What Happens When Earth's Magnetic Poles Reverse? - https://youtu.be/Ou1BiorYRNU Sign Up For The Seeker Newsletter Here - http://bit.ly/1UO1PxI Go to
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Environmental DNA: How to see the genetic clues left behind in a drop of water

131 views / 0 likes - added 1 year ago

Environmental DNA (eDNA) is the pool of genetic material that can be collected from an environmental sample. As organisms live and navigate in their aquatic habitat, they leave behind a trail of shed cells, skin, waste, and mucus. Just a few drops of wate
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What Animal Will Survive When Everyone Dies?

606 views / 1 likes - added 6 years ago

Has anything survived every mass extinction AND can live in space? Watch More: When Did Multicellular Life Begin? ►►►► https://www.youtube.com/watch?v=I2ZHMeF9dgA Get your exclusive Life Noggin merch: http://www.keeponthinking.co Support Life Noggin on Pa
04:15
See Sea Slugs Scour Seagrass by the Seashore | Deep Look

287 views / 0 likes - added 3 years ago

Eelgrass sea hares may look like lazy, zebra-striped spoonfuls of jello, but these sea slugs are actually environmental heroes. Their voracious appetite for algae helps keep underwater meadow ecosystems in balancewhich is great news for sea otters. Deep L
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How Phytoplankton Started Complex Life On Earth? | Plankton | The Dr Binocs Show | Peekaboo Kidz

369 views / 1 likes - added 1 year ago

How Phytoplankton Started Complex Life On Earth? | Plankton | What Is Phytoplankton? | Where Do Phytoplankton Live? | How Life Started On Earth?| Origin Of Life | Evolution Of Life | Life On Earth | Organisms | Microorganism | Why Are Phytoplankton Import
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How Does Cooperation Evolve?

460 views / 0 likes - added 5 years ago

If you find this animation helpful, consider supporting our work at http://statedclearly.com/contribute/ Lichen is a combination of algae and fungus (and in many cases, a third species of yeast) living together. This relationship allows the intertwined or
These Feisty Hermit Crabs Brawl Over Snail Shells | Deep Look

233 views / 2 likes - added 2 years ago

Hermit crabs are *obsessed* with snail shells. These crafty little crabs, found in California's rocky intertidal zone, are more than happy to let the snails build them a perfect home. When the crabs find a snail shell they like, they hop right into their
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Painting With The Sun!?

546 views / 0 likes - added 6 years ago

GET JACK BLACK: https://www.youtube.com/user/JackBlackSkinCare SUBSCRIBE!: http://bit.ly/1G97GmA SHARE THIS VIDEO: https://youtu.be/45I24TSTXtk Team!!!! Super stoked to do this super unique experiment! We teamed up with my favorite men’s grooming product,
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We Could Harvest Electricity from Human Tears, This Is How It Works

625 views / 0 likes - added 6 years ago

New research has found that an enzyme in tears can be used to generate electricity. Here’s everything you need to know. We Can Power The World With Algae! - https://youtu.be/ExOXF1x3N1g Get 20% off http://www.domain.com domain names and web hosting when y
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The History Of Life On Earth - Crash Course Ecology #1

1,239 views / 0 likes - added 8 years ago

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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02:58 Popular
Can Lab-Grown Super Corals Save The Ocean?

1,019 views / 4 likes - added 8 years ago

Coral reefs are an important part of our ecosystem, but they are struggling to survive in our changing oceans. Can science save them? To Find Out More About What You Can Do To Help, Visit ►►►► http://dne.ws/20MXQDd What Are Coral Reefs? ►►►► http://bit.ly
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05:56
The Oldest Plant-Like Fossils Ever

522 views / 0 likes - added 7 years ago

Researchers might have discovered the 2 oldest plant-like fossils this week! Meanwhile, scientists learned more about another superpower of our favorite organism: tardigrades. Hosted by: Hank Green Get your Knowledge is Power shirt, poster and banner toda
06:31
Inside Ikea's Secret Future Lab

435 views / 0 likes - added 4 years ago

This is Ikea's future lab, Space10. It's a space in downtown Copenhagen where researchers are creating a sustainable future by changing the way we live, work, and eat.The lab aims to highlight and answer some of the biggest questions about our future, and
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This Daring Fly Swims in a Shimmering Bubble Shield | Deep Look

165 views / 0 likes - added 6 months ago

Covered in a shiny bubble, the alkali fly scuba dives into the harsh waters of California's Mono Lake. Thanks to an abundance of hair and water-repellent wax, this remarkable insect remains dry while embarking on a quest for tasty algae and a place to lay
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Why didn't this 2,000 year old body decompose? - Carolyn Marshall

1,087 views / 2 likes - added 3 years ago

Discover the surprising biodiversity of soil, and how its microbes help support all life on Earth.--It may not appear very lively six feet underground, but a single teaspoon of soil contains more organisms than there are human beings on the planet. From b
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Why Don’t We Have Functional Biofuel Yet?

353 views / 0 likes - added 5 years ago

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
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Bioluminescence Explained | Lights of the Deep Sea

344 views / 0 likes - added 2 years ago

Bioluminescence in the deep sea is a natural phenomenon present in many deep sea creatures. Bioluminescent twinkling, flashing, pulsating lights are the result of a chemical reaction that produces light energy within the body of an organism. It is a commo
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What Happens When You Zap Coral With The World's Most Powerful X-ray Laser? | Deep Look

710 views / 3 likes - added 7 years ago

Some corals look like undersea gardens, gently blowing in the breeze. Others look like alien brains. But in their skeletons are clues that promise to give scientists a detailed picture of the weather from 500 years ago. Reading these bones? Easy. As long
05:29
Personal Disease Scanner? -- Mind Blow #89

591 views / 0 likes - added 8 years ago

Mind Blow features the latest news in science, technology and amazing! TWITTER: https://twitter.com/VsauceTwo **** SOURCES AND LINKS *** Quit Smoking While You Sleep (0:00) http://www.israel21c.org/headlines/learn-to-quit-smoking-while-you-sleep/ Exosuit
04:41 Popular
5 Genius Ways to Water Your Plants When You are Away on Vacation - Indoor Plants Automatic Watering

1,085 views / 1 likes - added 3 years ago

When you are away from home you need to make provisions to ensure that your plants stay healthy. If you are unable to get a friend or neighbour to come in and water your plants, there are some easy tips you can follow to keep your plants in great conditio
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Biodegradable Plastic is Coming. Will it Save our Oceans?

33 views / 0 likes - added 3 months ago

An earlier episode of Science to Save the World examined the enormous problem of oceanic plastic pollution. Check that out to get a full-scope picture of the problem and some potential solutions.Happily, biodegradable polymers may soon be able to help. Pl
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Roly Polies Came From the Sea to Conquer the Earth | Deep Look

698 views / 1 likes - added 7 years ago

Pill bugs. Doodle bugs. Potato bugs. Wood Shrimp. Whatever you call them, there’s something less creepy about these critters than other insects. Maybe it’s because they’re not insects at all. SUBSCRIBE to Deep Look! http://goo.gl/8NwXqt DEEP LOOK is a ult
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A Sand Dollar's Breakfast is Totally Metal | Deep Look

854 views / 0 likes - added 5 years ago

Their skeletons are prized by beachcombers, but sand dollars look way different in their lives beneath the waves. Covered in thousands of purple spines, they have a bizarre diet that helps them exploit the turbulent waters of the sandy sea floor. Please f
03:23 Popular
Sea Urchins Pull Themselves Inside Out to be Reborn | Deep Look

1,332 views / 3 likes - added 7 years ago

Conceived in the open sea, tiny spaceship-shaped sea urchin larvae search the vast ocean to find a home. After this incredible odyssey, they undergo one of the most remarkable transformations in nature. SUBSCRIBE to Deep Look! http://goo.gl/8NwXqt DEEP LO
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Sticky. Stretchy. Waterproof. The Amazing Underwater Tape of the Caddisfly | Deep Look

661 views / 0 likes - added 7 years ago

What do you do if you are a tiny caddisfly larva growing up in a torrent of water and debris? Simple. You build a shelter out of carefully selected pebbles and some homespun waterproof tape. SUBSCRIBE to Deep Look! http://goo.gl/8NwXqt DEEP LOOK is a ultr
02:56 Popular
Why Are There Penguins At The Equator?

765 views / 1 likes - added 5 years ago

Try Dashlane here: http://bit.ly/minutedash. Plus, here’s a 10% off promo code for Dashlane Premium: minuteearth When nutrients from the ocean depths reach the sunlit surface (like in the Galapagos), life is more productive. Thanks also to our Patreon pat
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This Snail Goes Fishing With a Net Made of Slime | Deep Look

89 views / 0 likes - added 6 months ago

Most of the sea snails in this tide pool cruise around searching for food. But not the scaled wormsnail. It cements its shell to a rock and snags its meals using the one thing a snail has plenty of: mucus!SUBSCRIBE to Deep Look! https://www.youtube.com/us
03:17 Popular
Dish Soap No Glue Slime, No Glue Fluffy Slime, No Glue,No Borax, No Shaving Foam, No Salt, MUST TRY

24.4k views / 20 likes - added 6 years ago

Real and Easy Dish Soap No Glue Slime Tutorial! If u have dish soap and face mask you can try the recipe easily!!The Best Ever Slime in no glue no borax slimes, I'll be testing out a slime that doesn't need borax, detergent, glue, corn starch and contact
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Why Can't We Get Power From Waves?

454 views / 0 likes - added 5 years ago

Thanks to OIST for sponsoring this video. To learn more, visit https://admissions.oist.jp/ Wave power hasn’t yet made a splash because it’s hard to use waves to spin turbines, and because the sea is a harsh place to build things. Thanks also to our Patreo
07:57
How Two Microbes Changed History

596 views / 0 likes - added 6 years ago

What if I told you that, more than two billion years ago, some tiny living thing started to live inside another living thing … and never left? And now, the descendants of both of those things are in you? Produced in collaboration with PBS Digital Studios:
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Starfish Gallop With Hundreds of Tubular Feet | Deep Look

459 views / 1 likes - added 3 years ago

They may look cute and colorful, but starfish are actually voracious predators. To sniff out and capture their prey, they rely on hundreds of water-propelled tube feet, each with a fiercely independent streak. Watch the new PBS Terra science show, OVERVIE

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