Comics that ask "what if?" | Randall Munroe

If all humans died, when would the last light go out?

Randall Munroe’s Comics Inspired Fans To Bring Chess Boards On Coasters | CONAN on TBS

How to power your house, with xkcd's Randall Munroe

What if all the lightning on Earth struck the same place at once?

You're Technically HOTTER Than The Sun (with XKCD!)

What if everyone jumped at once?