xkcd's What If?

  • Rank #
  • Premiered: Nov 2023
  • Episodes: 27
  • Followers: 0
  • Running
  • YouTube
  • at 0
  • Documentary

Seasons:

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Season 2024
2024x1
What if Earth suddenly stopped spinning?
Episode overview
Air date
Jan 09, 2024
What would happen if the Earth and all terrestrial objects suddenly stopped spinning, but the atmosphere retained its velocity?
2024x2
What if you threw a baseball going nearly light speed?
Episode overview
Air date
Feb 06, 2024
What would happen if you tried to hit a baseball pitched at 90% the speed of light?
2024x3
Could you make an umbrella out of lasers?
Episode overview
Air date
Feb 20, 2024
Stopping rain from falling on something with an umbrella is boring. What if you tried to stop rain with a laser that targeted and vaporized each incoming droplet before it could come within ten feet of the ground?
2024x4
Would a Submarine Work as a Spaceship?
Episode overview
Air date
Mar 05, 2024
How long could a nuclear submarine last in orbit?
2024x5
What if you swam in a nuclear storage pool?
Episode overview
Air date
Apr 02, 2024
What if I took a swim in a typical spent nuclear fuel pool? Would I need to dive to actually experience a fatal amount of radiation? How long could I safely stay at the surface?
2024x6
What if everyone jumped at once?
Episode overview
Air date
Apr 16, 2024
What would happen if everyone on earth stood as close to each other as they could, jumped, and landed on the ground all at the same instant?
2024x7
What if all the lightning on Earth struck the same place at once?
Episode overview
Air date
May 07, 2024
If all the lightning that occurs worldwide on any given day all struck the same place at once, what would happen to that place?
2024x8
If all humans died, when would the last light go out?
Episode overview
Air date
May 28, 2024
If every human somehow simply disappeared from the face of the earth, how long would it be before the last artificial light source would go out?
2024x9
What if you drained the oceans?
Episode overview
Air date
Jun 18, 2024
How quickly would the oceans drain if a circular portal 20 meters in diameter appeared at the bottom of Challenger Deep, the deepest spot in the ocean? How would the Earth change as the water is being drained?
2024x10
What if you tried to print Wikipedia?
Episode overview
Air date
Jul 09, 2024
If you had a printed version of the whole of Wikipedia, how many printers would you need in order to keep up with the changes made to the live version?
2024x11
What if we teleported the oceans to Mars?
Episode overview
Air date
Aug 13, 2024
Suppose you did drain earth’s oceans and dumped the water on top of the Curiosity rover, how would Mars change as the water accumulated?
2024x12
Could you survive a nanosecond on the Sun?
Episode overview
Air date
Sep 03, 2024
What would happen if you spent a nanosecond on the surface of the sun? Would it warm you up, burn you to a cinder, or do nothing at all?
2024x13
What if a glass of water were LITERALLY half empty?
Episode overview
Air date
Sep 24, 2024
What if a glass of water was, all of a sudden, literally half empty? The pessimist is probably more right about how it would turn out than the optimist.
2024x14
What if Earth grew 1cm every second?
Episode overview
Air date
Oct 15, 2024
How long would it take for people to notice their weight gain if the mean radius of the world increased by 1 cm every second? (Assuming the average composition of rock were maintained)
2024x15
What if everyone pointed a laser at the moon?
Episode overview
Air date
Nov 05, 2024
If every person on Earth aimed a laser pointer at the Moon at the same time, would it change color?
2024x16
How powerful can a laser get?
Episode overview
Air date
Dec 03, 2024
What if we tried a laser array with even MORE power?
2024x17
What if we put a pool on the moon?
Episode overview
Air date
Dec 24, 2024
What if there were a lake on the Moon? What would it be like to swim in it? Presuming that it’s sheltered in a regular atmosphere, in some giant dome or something.

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