What if the Moon were made of Protons?

How long could you drive towards the sunset?

What if you used a microwave as a snowblower?

What if we turned the moon into a black hole?

What if half the human population ate the other half 🍽️

Could you power your computer by typing?

What if you funneled the Niagara Falls through a straw?

How long could the human race survive on only cannibalism?

Weird and worrying questions

Why is the sky blue?

What if everyone on Earth was in the same place and jumped at the same time?

What would happen to the population if the Earth suddenly stopped spinning?

What if you tried to hit a baseball pitched at 90% the speed of light?

What would your country be like if the land masses were rotated by 90°?

How many elevators would you need in a billion-story building?

Understanding XKCD: Programmer Humor Explained