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  • 02:35 Popular Comparing Fractions Visually With A Bar | Fractions | 4th Grade | Khan Academy

    Comparing Fractions Visually With A Bar | Fractions | 4th Grade | Khan Academy

    1,111 views / 0 likes - added

    Learn how to compare fractions with unlike denominators by drawing bars Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-comparing-fractions-visually/e/visually

  • 05:39 Popular Can You Solve A 5th Grade Problem From China? Find The Area Of ABCD

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

    793 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

  • 09:31 Why is Friday the 13th Considered Unlucky?

    Why is Friday the 13th Considered Unlucky?

    528 views / 1 likes - added

    Try TunnelBear: http://tunnelbear.com/brainfood If you happen to like our videos and have a few bucks to spare to support our efforts, check out our Patreon page where we've got a variety of perks for our Patrons, including Simon's voice on your GPS and t

  • 06:08 The Most Dangerous Science Experiments—The Vampire Stake Test

    The Most Dangerous Science Experiments—The Vampire Stake Test

    558 views / 0 likes - added

    Go to http://audible.com/actionlab or text “actionlab” to 500 500 to get one free audiobook and a 30 day free trial! Plus, if you’re an Amazon Prime Member, you can get 3 months of Audible for $4.95/month for the first 3 months - offer e

  • 05:55 Popular "Impossible" Logic Puzzle - How Many Liars Are At The Party?

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

    812 views / 0 likes - added

    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

  • 03:28 Popular Flower Math Problem - Adults Stumped By Question For Kids In China

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

    1,395 views / 2 likes - added

    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

  • 15:15 Moving Faster Than The Speed Of Light? Special Relativity Velocity Addition Formula

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

    685 views / 0 likes - added

    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

  • 04:53 Popular Can You Solve The Friendship Riddle?

    Can You Solve The Friendship Riddle?

    1,306 views / 0 likes - added

    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

  • 05:34 A riddle of ice and fire dragons - Henri Picciotto

    A riddle of ice and fire dragons - Henri Picciotto

    243 views / 0 likes - added

    Practice more problem-solving at https://brilliant.org/TedEd--Its your first day as Center Realms official cartographer, and youve already got a big problem. Center Realm is home to three elder dragons: two ice, one fire, and theyve lived in harmony for c

  • 13:32 Did Raptorex Really Exist?

    Did Raptorex Really Exist?

    506 views / 0 likes - added

    Try CuriosityStream today: http://curiositystream.com/eons Paleontologists have been studying and drawing totally different conclusions about the fossil LH PV18 for almost a decade. Is it just one of many specimens of a theropod called Tarbosaurus bataar

  • 01:49 Popular This Matchstick Puzzle Is

    This Matchstick Puzzle Is

    858 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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  • 07:49 Popular Can You Solve The Viral 9 = 72 Puzzle? The Correct Answer Explained

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

    1,079 views / 0 likes - added

    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

  • 06:01 Popular Can You Solve The Viral 1 + 4 = 5 Puzzle? The Correct Answer Explained

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

    11.8k views / 1 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

  • 1:12:01 Popular Play Doh Shapes Surprise | ABC Songs for Children, Kindergarten Kids Learn the Alphabet, Toys

    Play Doh Shapes Surprise | ABC Songs for Children, Kindergarten Kids Learn the Alphabet, Toys

    1,438 views / 0 likes - added

    Billy & Betty Beaver Open Surprise Eggs with Shapes Inside & Make Colorful Shapes out of Play Doh. Children will Learn Colors & Shape Names with this Cute Collection of Catchy Songs & Engaging Lesson Videos for Toddlers by Busy Beavers. Play Doh Shapes Su

  • 13:48 How To Do 11 Easy Easter Magic Tricks

    How To Do 11 Easy Easter Magic Tricks

    603 views / 1 likes - added

    Looking for last minute Easter ideas? This Easter video teaches you cool magic tricks to spark wonder and amazement! Also learn funny pranks to pull on your loved ones this holiday and fun crafts to do this Easter Sunday 2019 - Learn how to dye Easter Egg

  • 24:35 Popular 10 EASY Magic Tricks To Do At Home!

    10 EASY Magic Tricks To Do At Home!

    1,808 views / 14 likes - added

    Magic Tricks :) In this episode of How To Magic, Evan Era from EvanEraTV shows 10 Easy Magic Tricks To Do At Home! Easy impromptu magic tricks for kids, beginners, and people of all ages! All magic secrets revealed with step by step instructions for each

  • 07:25 Popular Can You Solve The Race To December 31 Riddle?

    Can You Solve The Race To December 31 Riddle?

    716 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

  • 03:21 Popular Can You Solve A Puzzle That Fooled Richard Feynman?

    Can You Solve A Puzzle That Fooled Richard Feynman?

    711 views / 0 likes - added

    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

  • 05:48 What Is The Area? "You Should Be Able To Solve This"

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

    509 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

  • 03:36 [Yule Log Audio] O Come, O Come Emmanuel - Pentatonix

    [Yule Log Audio] O Come, O Come Emmanuel - Pentatonix

    585 views / 1 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

  • 03:44 [Yule Log Audio] The Christmas Song (Chestnuts Roasting on an Open Fire) - Pentatonix

    [Yule Log Audio] The Christmas Song (Chestnuts Roasting on an Open Fire) - Pentatonix

    577 views / 0 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

  • 02:26 Popular [Yule Log Audio] O Holy Night - Pentatonix

    [Yule Log Audio] O Holy Night - Pentatonix

    721 views / 0 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

  • 04:12 Popular [Yule Log Audio] Little Drummer Boy - Pentatonix

    [Yule Log Audio] Little Drummer Boy - Pentatonix

    713 views / 4 likes - added

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  • 03:04 [Yule Log Audio] Go Tell It On the Mountain - Pentatonix

    [Yule Log Audio] Go Tell It On the Mountain - Pentatonix

    569 views / 0 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

  • 03:14 Popular [Yule Log Audio] Carol of the Bells - Pentatonix

    [Yule Log Audio] Carol of the Bells - Pentatonix

    867 views / 0 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

  • 03:42 Popular [Yule Log Audio] Angels We Have Heard on High - Pentatonix

    [Yule Log Audio] Angels We Have Heard on High - Pentatonix

    1,380 views / 2 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

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  • 04:24 Popular [Yule Log Audio] This Christmas - Pentatonix

    [Yule Log Audio] This Christmas - Pentatonix

    778 views / 1 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

  • 03:04 Pentatonix Holiday Video Guide

    Pentatonix Holiday Video Guide

    598 views / 0 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

  • 03:27 [Yule Log Audio] Let it Go - Pentatonix

    [Yule Log Audio] Let it Go - Pentatonix

    604 views / 0 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

  • 03:14 Popular [Yule Log Audio] Silent Night - Pentatonix

    [Yule Log Audio] Silent Night - Pentatonix

    724 views / 0 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

  • 02:43 [Yule Log Audio] Santa Claus is Coming to Town - Pentatonix

    [Yule Log Audio] Santa Claus is Coming to Town - Pentatonix

    688 views / 1 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

  • 03:06 [Yule Log Audio] It's the Most Wonderful Time of the Year - Pentatonix

    [Yule Log Audio] It's the Most Wonderful Time of the Year - Pentatonix

    679 views / 0 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

  • 02:08 [Yule Log Audio] Dance of the Sugar Plum Fairy - Pentatonix

    [Yule Log Audio] Dance of the Sugar Plum Fairy - Pentatonix

    574 views / 0 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

  • 03:24 Popular [Yule Log Audio] Mary, Did you Know? - Pentatonix

    [Yule Log Audio] Mary, Did you Know? - Pentatonix

    746 views / 2 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

  • 03:03 [Yule Log Audio] That's Christmas to Me - Pentatonix

    [Yule Log Audio] That's Christmas to Me - Pentatonix

    584 views / 0 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

  • 03:29 [Yule Log Audio] Winter Wonderland / Don't Worry Be Happy - Pentatonix ft Tori Kelly

    [Yule Log Audio] Winter Wonderland / Don't Worry Be Happy - Pentatonix ft Tori Kelly

    687 views / 1 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

  • 02:17 [Yule Log Audio] Sleigh Ride - Pentatonix

    [Yule Log Audio] Sleigh Ride - Pentatonix

    654 views / 0 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

  • 02:48 [Yule Log Audio] White Winter Hymnal - Pentatonix

    [Yule Log Audio] White Winter Hymnal - Pentatonix

    653 views / 0 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

  • 03:10 Popular [Yule Log Audio] Hark! The Herald Angels Sing - Pentatonix

    [Yule Log Audio] Hark! The Herald Angels Sing - Pentatonix

    924 views / 0 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

  • 03:42 Popular [Official Video] Silent Night (Live) - Pentatonix

    [Official Video] Silent Night (Live) - Pentatonix

    732 views / 3 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

  • 13:40 Popular BEST Way To Play Memory (Card Game) - WIN Using Math

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

    951 views / 0 likes - added

    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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  • 03:17 Can YOU Solve It? This Question Stumped 75% Of PhD Economists

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

    609 views / 0 likes - added

    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

  • 17:33 10 Magic Challenges You're Guaranteed To Win!

    10 Magic Challenges You're Guaranteed To Win!

    614 views / 1 likes - added

    How To Magic Challenges! In this episode of How To Magic, Evan Era from EvanEraTV shows 10 Magic Challenges and Bar Bets You're Guaranteed To Win! Easy magic tricks and challenges for kids, beginners, and all ages! Family friendly fun magic challenges wit

  • 04:14 Popular [Official Video] Papaoutai– Pentatonix ft. Lindsey Stirling (Stromae Cover)

    [Official Video] Papaoutai– Pentatonix ft. Lindsey Stirling (Stromae Cover)

    1,093 views / 0 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

  • 1:00:10 Popular Laughing Baby | Laughing Baby Song + More Nursery Rhymes & Kids Songs | Little Baby Bum

    Laughing Baby | Laughing Baby Song + More Nursery Rhymes & Kids Songs | Little Baby Bum

    1,843 views / 1 likes - added

    SUBSCRIBE for new videos every week!►https://www.youtube.com/user/LittleBabyBum?sub_confirmation=1 Songs About Numbers, ABC's and shapes: https://www.youtube.com/watch?v=wwdqK_XNBNM&list=PL0VE_cI7-AYRotjbI1cGFg8zscyzgFClS LBB TV: https://www.youtube.com/w

  • 09:11 Popular Can You Solve The Rectangle Ratio Puzzle? The Surprising Answer

    Can You Solve The Rectangle Ratio Puzzle? The Surprising Answer

    855 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

  • 03:48 Popular Can You Solve This Harvard Admissions Question? Algebra Problem, 1869

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

    1,475 views / 0 likes - added

    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

  • 08:05 Popular Can You Solve The Hardest Easy Geometry Problem?

    Can You Solve The Hardest Easy Geometry Problem?

    1,273 views / 1 likes - added

    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

  • 05:57 Popular Can You Solve This 6th Grade Geometry Problem From Singapore? The Area Of A "Claw"

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

    1,129 views / 1 likes - added

    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

  • 03:51 Popular Can You Solve This MIT Admissions Question? Geometry Problem, 1869

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

    951 views / 0 likes - added

    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

  • 06:24 Can You Solve The Missing Sock Puzzle?

    Can You Solve The Missing Sock Puzzle?

    618 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

  • 03:38 Popular [Official Video] Problem - Pentatonix (Ariana Grande Cover)

    [Official Video] Problem - Pentatonix (Ariana Grande Cover)

    3,029 views / 18 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

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  • 02:51 Popular The Horse Horseshoe Boots Viral Algebra Problem - The Correct Answer Explained

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

    1,728 views / 2 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:

  • 11:27 Popular Can You Solve The Viral 11x11 = 4 Puzzle? The Correct Answer Explained

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

    3,054 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

  • 03:16 Popular Can You Solve This 8th Grade Geometry Problem? 75% Got The Wrong Answer

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

    1,003 views / 0 likes - added

    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.

  • 06:03 Why Is Florida Releasing 750 Million GMO Mosquitoes?

    Why Is Florida Releasing 750 Million GMO Mosquitoes?

    264 views / 0 likes - added

    The U.S. EPA recently gave the green light to release millions of genetically modified mosquitoes in the Florida Keys. Why are they doing this, and what are the potential risks? Subscribe to Seeker! http://bit.ly/subscribeseeker Watch more Elements! http:

  • 05:26 Can You Solve The Red Ball Lottery Puzzle?

    Can You Solve The Red Ball Lottery Puzzle?

    673 views / 0 likes - added

    (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

  • 04:56 Popular [Official Video] Daft Punk - Pentatonix

    [Official Video] Daft Punk - Pentatonix

    991 views / 9 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY THAT’S CHRISTMAS TO ME http://smarturl.it/PTXtctmiT?iqiD=YT BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt | BUY PTXMAS http://smarturl.it/PTXmas?IQId=yt | BUY PTX VOL I h

  • 07:21 Popular Can You Solve The Magical Pond Puzzle?

    Can You Solve The Magical Pond Puzzle?

    1,035 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 Popular Adults Stumped By Maths Questions For 15 Year Olds. Can You Solve Them?

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

    797 views / 0 likes - added

    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

  • 03:09 Can You Solve The Marriage Logic Problem? 80% Fail

    Can You Solve The Marriage Logic Problem? 80% Fail

    679 views / 0 likes - added

    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

  • 04:13 Popular Can You Solve This Grade 12 Geometry Problem From Australia? The Marshmallow Chocolate Puzzle

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

    911 views / 0 likes - added

    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

  • 05:33 Popular What is 6÷2(1+2) = ? The Correct Answer Explained

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

    885 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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  • 06:28 Leonardo da Vinci Created a Satellite Map Without the Use of a Satellite

    Leonardo da Vinci Created a Satellite Map Without the Use of a Satellite

    474 views / 0 likes - added

    Leonardo da Vinci most famous for his work Mona Lisa was so much more than a painter. He was a mathematician, writer, historian, engineer, and an amazing invento, just to name a few. He was a man truly and almost eerily ahead of his time. Actually, withou

  • 02:57 Popular Can You Solve This Crazy Equation? Ramanujan's Radical Brain Teaser

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

    1,098 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

  • 03:54 Popular What's The Best Soup Can Size? The Optimal Cylinder Puzzle

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

    800 views / 0 likes - added

    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

  • 04:05 Popular [Official Video] Mary, Did You Know? - Pentatonix

    [Official Video] Mary, Did You Know? - Pentatonix

    1,354 views / 17 likes - added

    2015 TOUR DATES (CITIES&VENUES LISTED BELOW) -- http://ptxofficial.com/tour BUY“THAT’S CHRISTMAS TO ME” http://smarturl.it/PTXtctmiT?iqiD=YT | BUY "MARY, DID YOU KNOW?" VIDEO http://smarturl.it/PTXMDYKiTv BUY PTX VOL III http://smarturl.it/PTXVol3?IQId=yt

  • 07:40 Popular Can You Solve The 21 Flags Game From Survivor?

    Can You Solve The 21 Flags Game From Survivor?

    891 views / 1 likes - added

    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

  • 08:46 10 Levels of Sleight of Hand

    10 Levels of Sleight of Hand

    337 views / 0 likes - added

    To book a show or take private lessons, go to https://www.danielroymagic.com. Instagram: https://www.instagram.com/danielroymagic Twitter: https://twitter.com/danielroymagic Tik Tok: https://www.tiktok.com/@danielroymagic LEARN CARD MAGIC: https://danielr

  • 08:51 Popular The Viral Balloon Puzzle - The REAL Answer Explained (Using Ph.D. Level Math)

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

    770 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

  • 05:58 13 DIYs TO SURVIVE A BORING DAY AT THE SCHOOL

    13 DIYs TO SURVIVE A BORING DAY AT THE SCHOOL

    547 views / 0 likes - added

    FUN DAY AT THE SCHOOL I decided that I am not going to buy a ton of calendars in 2019 In the end, I made this very easy, reusable calendar that I’ve already been waxing on and off all day long. Since every month runs a bit differently, we’ll need to have

  • 21:50 Worlds Smallest Nerf Gun Shoots an Ant

    Worlds Smallest Nerf Gun Shoots an Ant

    289 views / 1 likes - added

    Creating the Worlds smallest Nerf gun 5 times in a row. Reserve your CrunchLabs Build Box for the holidays here- https://crunchlabs.comI started a company called CrunchLabs, where we build a toy together, and then I teach you all the juicy physics for how

  • 09:50 Popular Can You Solve This 6th Grade Geometry Problem From China?

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

    1,263 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

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  • 05:52 Popular Can You Solve The "MEANEST" SAT Test Question Ever?

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

    704 views / 0 likes - added

    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

  • 02:06 Popular Can You Solve The Viral Matchstick Puzzle 6 + 4 = 4?

    Can You Solve The Viral Matchstick Puzzle 6 + 4 = 4?

    3,482 views / 0 likes - added

    Can you fix 6 + 4 = 4 by moving 1 matchstick? This problem has gone viral on Facebook, with one post having over 400,000 shares. The ground rules are you cannot break a stick, it should be an equality (=), and you have to use 7-segment numbers (the block

  • 06:35 Your brain doesnt detect reality. It creates it. | Lisa Feldman Barrett

    Your brain doesnt detect reality. It creates it. | Lisa Feldman Barrett

    90 views / 0 likes - added

    This interview is an episode from @The-Well , our publication about ideas that inspire a life well-lived, created with the @JohnTempletonFoundation.Subscribe to The Well on YouTube https://bit.ly/thewell-youtubeWatch Lisa Feldman Barretts next interview h

  • 04:02 Scientists Just Proved the Existence of Liquid Glass

    Scientists Just Proved the Existence of Liquid Glass

    530 views / 0 likes - added

    First predicted nearly 20 years ago, researchers have finally (and accidentally) proved the existence of a new state of matter: 'liquid glass'. Subscribe to Seeker! http://bit.ly/subscribeseeker Watch more Elements! http://bit.ly/ElementsPlaylist Visit ou

  • 17:36 Popular Painting on Seashells

    Painting on Seashells

    807 views / 5 likes - added

    Hey Guys! today I am doing a highly requested video of painting on seashells. I've been seeing these requests pop up a lot since I decorated seashells last summer for the first time. I guess we are doing this every summer then? Here is last year's video:

  • 09:10 14 Ancient Monsters Terrified Even Dinosaurs

    14 Ancient Monsters Terrified Even Dinosaurs

    347 views / 0 likes - added

    We dive back in time and into the oceans over half a billion years ago. Watch out! Its not Megalodon or giant sea reptiles like Mosasaurus you need to look out for . Its a bizarre, unearthly looking creature called anomalocaris. It looked like a nightmari

  • 11:14 Popular The Milky Way: Crash Course Astronomy #37

    The Milky Way: Crash Course Astronomy #37

    791 views / 0 likes - added

    Today we’re talking about our galactic neighborhood: The Milky Way. It’s a disk galaxy, a collection of dust, gas, and hundreds of billions of stars, with the Sun located about halfway out from the center. The disk has grand spiral patterns in it, formed

  • 05:18 Think Like an Engineer!

    Think Like an Engineer!

    185 views / 0 likes - added

    Mister Brown teaches Squeaks all about engineering to help him solve a problem he is having!Hosted by: Anthony Brown----------Love SciShow Kids and want to help support it? Become a Patron on Patreon: https://www.patreon.com/scishowIf you have a question

  • 06:18 Popular Can You Solve The Diluted Wine Puzzle?

    Can You Solve The Diluted Wine Puzzle?

    766 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

  • 03:46 Popular Can You Reach The End Of A Rainbow?

    Can You Reach The End Of A Rainbow?

    1,288 views / 1 likes - added

    The end of the rainbow may be the best place to raid a leprechaun stash, but it proves a strangely difficult destination to reach. Brainstuff explains why you can’t get there, and why there really isn’t even a a “there” there. Learn more at HowStuffWorks.

  • 04:30 Popular Adults Are Arguing About This 3rd Grade Math Problem

    Adults Are Arguing About This 3rd Grade Math Problem

    892 views / 0 likes - added

    "If Sue runs around the track twice, and John runs around the track four times more than Sue, how many times does John run around the track?" This problem was given to 3rd graders. A parent disagreed with the answer the teacher was marking. After it was p

  • 13:59 Popular Customizing My Shoes

    Customizing My Shoes

    859 views / 5 likes - added

    Hey Guys! Today I am going to be painting and customizing a pair of shoes. They are some cheap knock offs of Vans, but still. They came out really cute. I really enjoyed this process, it was really fun, and there are so many possibilities, especially if y

  • 21:09 Popular I Brought My Painting to Life | Bake With ME #7

    I Brought My Painting to Life | Bake With ME #7

    1,000 views / 7 likes - added

    Go to https://buyraycon.com/moriah for 15% off your order! Brought to you by Raycon.Hey guys! Today I am doing another baking video where I take one of my art creations (in this case one of my custom phone cases) and attempt to bake and bring it to life.

  • 14:36 Customizing Nesting Dolls

    Customizing Nesting Dolls

    690 views / 8 likes - added

    Hey guys! Today I am going to be painting on and customizing a set of Russian nesting dolls (or matryoshka dolls). I have been waiting (and some of you too) forever to paint these, so I was really excited to finally decorate these and add my own style to

  • 15:01 Popular Turning Myself into a Cupcake

    Turning Myself into a Cupcake

    705 views / 5 likes - added

    Hey guys! Today is kind of a different video for me. I'm trying something I've never done before and experimenting with face painting, body painting, wigs, and DIY costumes in order to turn myself into a cupcake. Let's say it's in the name of Halloween...

  • 11:57 The Wallis Formula For π

    The Wallis Formula For π

    584 views / 0 likes - added

    Start with the pair of fractions (2/1)(2/3). Now increment each number by 2 to get the pair of fractions (4/3)(4/5). Repeat this to get the next pair, and repeat this infinitely many times. If you then multiply all the fractions, you get a marvelous value

  • 07:47 Popular Can You Solve The Probability The Newborn Is A Boy? Many Fail This Interview Question

    Can You Solve The Probability The Newborn Is A Boy? Many Fail This Interview Question

    828 views / 0 likes - added

    This problem has been asked in job interviews. On the morning of January 1, a hospital nursery has 3 boys and some number of girls. That night, a woman gives birth to a child, and the child is placed in the nursery. On January 2, a statistician conducts a

  • 04:39 How Virgin Galactic Plans to Send You to Space | Countdown to Launch

    How Virgin Galactic Plans to Send You to Space | Countdown to Launch

    380 views / 0 likes - added

    Space tourism is the next great frontier for mankind and Virgin Galactic is at the forefront with its innovative space planes. Subscribe to Seeker!http://bit.ly/subscribeseeker Watch more Countdown to Launch: http://bit.ly/CTLplaylist For years, Virgin Ga

  • 17:54 Testing Art Trends I've Missed #2

    Testing Art Trends I've Missed #2

    572 views / 5 likes - added

    Hey guys! So I wanted to dedicate a video to testing out the art trends that I've noticed around social media in the past year, but have never actually taken the time to try out. Last time I did this, I tried hydro dipping and it was a complete mess.....l

  • 07:39 Popular Can You Solve The Alien Extinction Riddle? Hard Job Interview Question

    Can You Solve The Alien Extinction Riddle? Hard Job Interview Question

    868 views / 0 likes - added

    A single alien lands on Earth. Every day after that, each alien on Earth undergoes a transformation, which could be any of the four equally likely events: (a) the alien dies, (b) the alien does nothing, (c) the alien replicates itself (2 aliens total), (d

  • 12:51 Popular I Made A HUGE Slime Art Masterpiece - #ElmersWhatIf Slime Challenge

    I Made A HUGE Slime Art Masterpiece - #ElmersWhatIf Slime Challenge

    1,012 views / 13 likes - added

    Thank you to Elmer's for sponsoring this video and making this awesome slime art challenge possible! Be sure to follow #ElmersWhatIf to see more satisfying slime mystery unboxing videos! Today I am doing something different for my channel. Thanks to Elmer

  • 11:06 Popular The Map of Mathematics

    The Map of Mathematics

    910 views / 0 likes - added

    The entire field of mathematics summarised in a single map! This shows how pure mathematics and applied mathematics relate to each other and all of the sub-topics they are made from. If you would like to buy a poster of this map, they are available here:

  • 14:51 Popular Painting With AMAZING. Fizzy. Paint.

    Painting With AMAZING. Fizzy. Paint.

    791 views / 6 likes - added

    Hey guys! Today is another one of my art or craft kit "reviews." I used to do a very strict review style format where it's all about the kit and using only the supplies included. but now, it's morphed into me starting with a kit and figuring out what I wa

  • 11:22 Meteors: Crash Course Astronomy #23

    Meteors: Crash Course Astronomy #23

    647 views / 2 likes - added

    Today Phil helps keep you from ticking off an astronomer in your life by making sure you know the difference between a meteor, meteorite, and meteoroid. When the Earth plows through the stream emitted by a comet we get a meteor shower. Meteors burn up abo

  • 17:14 Popular Customizing Hydro Flasks

    Customizing Hydro Flasks

    719 views / 6 likes - added

    Hey Guys! Today Im going to be jumping on a recent trend (kind of, Im a little late, but.better late than never?). You guys know how Im obsessed with painting.basically anything. Well, the Hydro Flask re-usable water bottles have been super popular recent

  • 07:12 Popular The Great Emu War of 1932

    The Great Emu War of 1932

    822 views / 1 likes - added

    →FREE BOOK FROM AUDIBLE: http://audible.com/brainfood →Subscribe for new videos every day! https://www.youtube.com/user/TodayIFoundOut?sub_confirmation=1 →How "Dick" came to be short for 'Richard': https://youtu.be/BH1NAwwKtcg?list=PLR0XuDegDqP2Acy6g9Ta7h

  • 19:47 Popular Squishy Makeovers: Fixing Your Squishies #19

    Squishy Makeovers: Fixing Your Squishies #19

    4,289 views / 13 likes - added

    Hey guys!!! I'm back with another episode of squishy makeovers. This is a good one! I made some creations, I'm really proud of, I hope you guys like them just as much as I do. Welcome to another episode of squishy makeovers, where I transform ugly, used,

  • 15:36 Popular Squishy Makeovers: Fixing Your Squishies #21

    Squishy Makeovers: Fixing Your Squishies #21

    1,824 views / 11 likes - added

    Welcome to another episode of squishy makeovers, where I transform ugly, used, old, dirty, cheap or unwanted squishies (donated by my subscribers) into my own creations. I repair, paint and cut away for hours on end to complete these. Hopefully you like t

  • 05:13 The Sahara Desert Used to Look Like ThisAnd May Again

    The Sahara Desert Used to Look Like ThisAnd May Again

    176 views / 0 likes - added

    Thousands of years ago, the Sahel region of Africa was a green, lush, tropical paradise. The Great Green Wall initiative is on a mission to restore that greenery in that region across the entire continent. Subscribe to Seeker! http://bit.ly/subscribeseeke

  • 13:57 Popular How To Do 5 EASY Magic Tricks!

    How To Do 5 EASY Magic Tricks!

    1,047 views / 0 likes - added

    Learn how magic tricks work! In this How To Magic video we will teach you how to do five easy magic tricks that you can perform at home now! Easy magic tricks for beginners or all skill levels! Simple illusions with household objects that will blow your f

  • 15:24 Popular PIZZA CHALLENGE RYAN TOYSREVIEW with Bean Boozled Gross Pizza Candy Surprise Eggs Opening

    PIZZA CHALLENGE RYAN TOYSREVIEW with Bean Boozled Gross Pizza Candy Surprise Eggs Opening

    2,234 views / 8 likes - added

    Pizza challenge with Ryan ToysReview! Ryan's family tried out this fun food challenge to make gross pizza with fun and gross toppings like gummy worms, hot sauce, gross candy like bean boozled and yummy candy like chocolate bar! It was a fun diy family ch

  • 18:56 Popular Squishy Makeovers: Fixing Your Squishies #18

    Squishy Makeovers: Fixing Your Squishies #18

    1,983 views / 7 likes - added

    AD | Take 20% off when you shop at Arteza for the next 7 days using MORIAH20 at checkout https://arteza.com/moriahWelcome to another episode of squishy makeovers, where I transform ugly, used, old, dirty, cheap or unwanted squishies (donated by my subscri

  • 17:06 Popular Squishy Makeovers: Spin The Wheel

    Squishy Makeovers: Spin The Wheel

    1,379 views / 8 likes - added

    Hey guys! Today is another long awaited episode of squishy makeovers: fixing your squishies, EXCEPT this time with a twist! I am going to be selecting the squishies randomly with a mystery wheel app. This was a lot of fun to switch things up. Let me know

  • 05:27 Popular Can You Solve The Mind-Bending Self-Counting Sentence Riddle?

    Can You Solve The Mind-Bending Self-Counting Sentence Riddle?

    957 views / 0 likes - added

    "In this sentence, the number of occurrences of the digit 0 is __, of the digit 1 is __, of the digit 2 is __, of the digit 3 is __, of the digit 4 is __, of the digit 5 is __, of the digit 6 is __, of the digit 7 is __, of the digit 8 is __, and of the d

  • 16:51 Popular Fixing The UNFIXABLE: Squishy Makeovers from "The Hopeless Bin"

    Fixing The UNFIXABLE: Squishy Makeovers from "The Hopeless Bin"

    1,583 views / 14 likes - added

    Hey guys! Today I am doing a video that was honestly DEMANDED by some people in my comment sections recently Many of you really wanted to see my attempt to "Fix The Unfixable," sooooo, here I go. This special episode of squishy makeovers will be me attemp

  • 15:38 Popular I Painted My Clothes

    I Painted My Clothes

    745 views / 8 likes - added

    Hey Guys! Today I am trying something slightly different. I'm still painting on something....of course. BUT, today I am going to be painting on...my clothes? LOLI love jean jackets, so I thought it would be really cool to create a custom painted jacket. I

  • 11:23 Popular What Happens if You Accidentally Damage or Destroy a Priceless Work of Art in a Museum

    What Happens if You Accidentally Damage or Destroy a Priceless Work of Art in a Museum

    710 views / 0 likes - added

    Thanks to Skillshare for sponsoring this video! First 200 people will get a 2 month trial for free here: http://skl.sh/2xwnKCg If you happen to like our videos and have a few bucks to spare to support our efforts, check out our Patreon page where we've go

  • 03:18 Popular How Mosquitoes Use Six Needles to Suck Your Blood  |  Deep Look

    How Mosquitoes Use Six Needles to Suck Your Blood | Deep Look

    764 views / 1 likes - added

    Seen up close, the anatomy of a mosquito bite is terrifying. The most dangerous animal in the world uses six needle-like mouthparts to saw into our skin, tap a blood vessel and sometimes leave a dangerous parting gift. SUBSCRIBE to Deep Look! http://goo.g


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