TedEd

1. How do virus tests actually work?
2. Gerrymandering: How drawing jagged lines can impact an election
3. Which is better: Soap or hand sanitizer?
4. Can you solve the multiverse rescue riddle?
5. Can you solve the time travel riddle?
6. Could we cure aging during your lifetime?
7. What would happen if you didn't drink water?
8. Exploring other dimensions
9. How can we solve the antibiotic resistance crisis?
10. How bones make blood
11. Are ghost ships real?
12. When is a pandemic over?
13. Why do people fear the wrong things?
14. A brief history of chess
15. Why can’t we see evidence of alien life?
16. The treadmill’s dark and twisted past
17. Why isn’t the Netherlands underwater?
18. The Turing Test: Can a computer pass for a human?
19. Can you solve the rebel supplies riddle?
20. What is phantom traffic and why is it ruining your life?
21. The Egyptian myth of the death of Osiris
22. How do solar panels work?
23. The history of the Cuban Missile Crisis
24. How do our brains process speech?
25. The dark history of IQ tests
26. Can you solve the troll’s paradox riddle?
27. The Infinite Hotel Paradox
28. The art forger who tricked the Nazis
29. The dangers of mixing drugs
30. How does laser eye surgery work?
31. How rollercoasters affect your body
32. The imaginary king who changed the real world
33. Will there ever be a mile-high skyscraper?
34. The big-beaked, rock-munching fish that protect coral reefs
35. Is there a limit to technological progress?
36. Can you solve the rogue AI riddle?
37. How to 3D print human tissue
38. How close are we to uploading our minds?
39. Which is stronger: Glue or tape?
40. Football physics: The "impossible" free kick
41. How to spot a counterfeit bill
42. The last living members of an extinct species
43. Why don't perpetual motion machines ever work?
44. What's that ringing in your ears?
45. How the world's first metro system was built
46. What causes insomnia?
47. When is water safe to drink?
48. Why doesn’t anything stick to Teflon?
49. How to spot a pyramid scheme
50. Why can't you divide by zero?
51. Is the weather actually becoming more extreme?
52. Should you trust unanimous decisions?
53. What was so special about Viking ships?
54. The fish that walk on land
55. Why people fall for misinformation
56. The beneficial bacteria that make delicious food
57. A brief history of plastic
58. Performing brain surgery without a scalpel
59. The infinite life of pi
60. How one design flaw almost toppled a skyscraper
61. How tsunamis work
62. What makes muscles grow?
63. What happens when you have a concussion?
64. How fast is the speed of thought?
65. The sharks that hunt in forests
66. A brief history of toilets
67. The benefits of a good night's sleep
68. Could we build a wooden skyscraper?
69. The ancient origins of the Olympics
70. Which sunscreen should you choose?