03:30
What if you drained the oceans?
Xqucd Mp3 & Mp4
03:30
03:55
How to Build a Lava Moat (with xkcd)
03:41
You're Technically HOTTER Than The Sun (with XKCD!)
05:04
If all humans died, when would the last light go out?
03:47
What if all the lightning on Earth struck the same place at once?
02:58
How To Go To Space (with XKCD!)
03:06
What would a magnitude 15 earthquake be like?
04:23
Would a Submarine Work as a Spaceship?
03:58
What if you swam in a nuclear storage pool?
03:52
What if everyone jumped at once?