| 1. | Why Is Blue So Rare In Nature? | 550,849 | |
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| 2. | How An Igloo Keeps You Warm | 364,170 | |
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| 3. | We were completely WRONG about starfish | 397,000 | |
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| 4. | Are We All Related? | 277,357 | |
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| 5. | These weird footprints 👣 rewrite the history of North America | 375,679 | |
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| 6. | What Is Fire? | 224,815 | |
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| 7. | The Law of Urination | 448,000 | |
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| 8. | Why Do We Itch? | 190,628 | |
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| 9. | Why Are We The Only Humans Left? | 159,616 | |
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| 10. | Why Is Sex a Thing? | 156,097 | |
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| 11. | What is Impossible in Evolution? | 133,948 | |
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| 12. | A Brief (Scientific) History of Butts | 133,000 | |
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| 13. | Is Height Genetic? | 127,757 | |
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| 14. | The Cheerios Effect | 126,660 | |
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| 15. | The Golden Ratio: Is It Myth or Math? | 115,894 | |
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| 16. | What This Chart Actually Means for COVID-19 | 114,002 | |
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| 17. | Evolution FAILS in the Human Body | 106,125 | |
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| 18. | Does Someone Else Have Your Face? Doppelgängers Explained! | 98,033 | |
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| 19. | Are We Living In the Sixth Extinction? | 95,636 | |
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| 20. | 7 Scientific Urban Legends Debunked! | 87,971 | |
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| 21. | Why Are There 7 Days In a Week? EXPLAINED | 87,656 | |
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| 22. | ЩΉӨ BЦIᄂƬ ƬΉΣ PYЯΛMIDƧ | 83,326 | |
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| 23. | How Do Bees Make Honey? | 82,967 | |
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| 24. | 100,000,000 Years From Now | 80,052 | |
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| 25. | Why Do Disney Princesses All Look Like Babies? | 79,291 | |
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| 26. | The Impossible Hugeness of Deep Time | 78,585 | |
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| 27. | Why Nature Loves Hexagons | 77,145 | |
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| 28. | How Some Words Get Forgetted | 76,881 | |
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| 29. | Who Shares Your Birthday? | 74,887 | |
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| 30. | Apollo’s Most Important Discovery (Inside NASA’s Moon Rock Vault!) | 74,506 | |
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| 31. | Where Did Life Come From? (feat. PBS Space Time and Eons!) | 71,465 | |
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| 32. | There Was No First Human | 69,694 | |
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| 33. | Why Do We Have To Sleep? | 67,571 | |
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| 34. | Inside the Lab That Invented the COVID-19 Vaccine | 67,302 | |
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| 35. | Will You Still Eat Raw Fish After Watching This Video? | 65,449 | |
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| 36. | Why Does February Only Have 28 Days? | 64,563 | |
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| 37. | Where Do Teeth Come From? | 64,290 | |
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| 38. | 5 Weird Involuntary Behaviors Explained! | 63,257 | |
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| 39. | The Fastest Animals Are Way Faster Than You Think | 63,145 | |
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| 40. | Why Are So Many People Allergic To Food? | 62,968 | |
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| 41. | Why Salt & Pepper Ended Up On Every Table | 62,814 | |
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| 42. | How Well Do Masks Work? (Schlieren Imaging In Slow Motion!) | 62,759 | |
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| 43. | Why Are There As Many Males As Females? | 62,586 | |
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| 44. | Humans Are Smart. Why Are Babies So Dumb? | 61,991 | |
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| 45. | When Is Now? | 61,724 | |
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| 46. | Are Humans Still Evolving? | 61,184 | |
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| 47. | This Face TOTALLY Changes the Human Story | 59,814 | |
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| 48. | What is Farthest Away? | 58,959 | |
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| 49. | Why No One Can See the Stars Anymore | 58,506 | |
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| 50. | The Unbelievable Science of How We Read | 58,226 | |
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| 51. | How Your Memory Works | 57,902 | |
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| 52. | How Ancient Ice Proves Climate Change Is Real | 55,768 | |
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| 53. | 20 MILLION Year-Old Spider and the Science of Spider Silk | 55,707 | |
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| 54. | The Most Unbelievable Image Ever Captured by Hubble Space Telescope | 55,274 | |
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| 55. | Why Does Everyone Hate Pigeons? | 55,251 | |
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| 56. | Sand Dunes Shouldn’t Exist (Here’s Why They Do) | 55,010 | |
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| 57. | Is Your Eye Color Real? | 54,602 | |
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| 58. | Is There Life on Earth? | 53,371 | |
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| 59. | This is why astronauts look so WEIRD in zero g | 315,000 | |
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| 60. | The Strange Science of Why We Dream | 52,743 | |
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| 61. | How Blind People See With Sound… with @MollyBurkeOfficial! | 52,647 | |
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| 62. | Here's What I Learned From Getting COVID | 52,188 | |
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| 63. | The Strange and Unexpected Reason Ice is Slippery | 50,301 | |
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| 64. | Why Do We Lie? | 50,254 | |
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| 65. | Probably the worst idea in the history of the space age | 173,000 | |
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| 66. | Could You REALLY Survive Being Shrunk?! | 49,704 | |
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| 67. | Is Sugar a Drug? | 49,660 | |
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| 68. | The INCREDIBLE Ancient Engineering That Built the Pyramids | 48,956 | |
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| 69. | The 12 Days of Evolution - Complete Series! | 48,911 | |
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| 70. | What is Déjà Vu?! | 48,240 | |
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| 71. | Why Do More Species Live Near the Equator? | 46,901 | |
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| 72. | How The Toilet Changed History | 46,417 | |
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| 73. | Glass is Solid… So Why Is It Clear? | 45,793 | |
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| 74. | TRILLIONS of cicadas are emerging. Math can tell us why… | 197,000 | |
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| 75. | Where Did Humans Come From? | 45,586 | |
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| 76. | How Your Brain Makes Time Pass Fast or Slow | 45,135 | |
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| 77. | Why Don't Ants Get Stuck In Traffic? | 44,753 | |
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| 78. | Why Don’t Woodpeckers Get Concussions? | 44,390 | |
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| 79. | How to Defuse the Overpopulation Bomb | 44,387 | |
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| 80. | How Much Of You Is ACTUALLY Alive? | 43,995 | |
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| 81. | The Largest River On Earth Is In The Sky | 43,778 | |
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| 82. | The Science of Marathon Running | 43,356 | Vlog |
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| 83. | What Is Nothing? | 42,439 | |
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| 84. | Is Your Brain Too Old For Video Games? | 41,824 | | StarCraft II
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| 85. | The Surprising Reason We Eat Spicy Food | 41,514 | |
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| 86. | Why Do We Laugh? | 40,207 | |
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| 87. | Why You Can’t Smell Yourself (and Other Ways Your Senses Lie to You) | 39,800 | |
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| 88. | Why Do You Love Your Family? | 39,712 | |
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| 89. | COVID-19 & Mask Myths DEBUNKED! | 39,493 | |
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| 90. | Do Fish Pee? | 39,397 | |
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| 91. | Is Space a Thing? | 38,946 | |
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| 92. | How Did Giant Pterosaurs Fly? | 38,933 | |
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| 93. | Why BEAVERS Are The Smartest Thing In Fur Pants | 38,629 | |
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| 94. | Who Invented the Metric System (and Why It Isn’t As Perfect as You Think) | 38,095 | |
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| 95. | Fixing Daylight Saving Time Is THIS Easy | 38,017 | |
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| 96. | The Oldest Living Things In The World | 37,999 | |
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| 97. | What Do Raindrops Really Look Like? | 37,988 | |
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| 98. | Is Santa Real? (A Scientific Analysis) | 37,787 | |
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| 99. | Fact vs. Theory vs. Hypothesis vs. Law… EXPLAINED! | 37,775 | |
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| 100. | Why No One Can Agree What’s REALLY the Tallest Mountain | 37,651 | |
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