xkcd's What If?

xkcd's What If?

xkcd's What If?

xkcd's What If?

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Why is the sky blue?

Why is the sky blue?xkcd's What If?Short · 4 days ago

What would happen if the Sun went dark?

What would happen if the Sun went dark?xkcd's What If?Video · 2 weeks ago

What if you kept digging downward?

What if you kept digging downward?xkcd's What If?Video · 4 weeks ago

Which path would the three wise men have walked?

Which path would the three wise men have walked?xkcd's What If?Video · 1 month ago

Where would the three wise men go if they followed a planet?

Where would the three wise men go if they followed a planet?xkcd's What If?Short · 1 month ago

What if you floated upwards 1 ft every second?

What if you floated upwards 1 ft every second?xkcd's What If?Video · 2 months ago

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

How many elevators would you need in a billion-story building?xkcd's What If?Video · 2 months ago

What if we built a billion-story building?

What if we built a billion-story building?xkcd's What If?Video · 2 months ago

What if you made a jetpack using rifles?

What if you made a jetpack using rifles?xkcd's What If?Video · 2 months ago

What if you teleported to the Sun?

What if you teleported to the Sun?xkcd's What If?Video · 2 months ago

What if you printed all of Wikipedia?

What if you printed all of Wikipedia?xkcd's What If?Video · 3 months ago

How long would you survive with no DNA?

How long would you survive with no DNA?xkcd's What If?Video · 3 months ago

What if we teleported the oceans to Mars?

What if we teleported the oceans to Mars?xkcd's What If?Video · 4 months ago

What if you drained the oceans?

What if you drained the oceans?xkcd's What If?Video · 4 months ago

Can you power your computer by typing?

Can you power your computer by typing?xkcd's What If?Video · 5 months ago

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

What if everyone on Earth was in the same place and jumped at the same time?xkcd's What If?Video · 5 months ago

Could you swim in a spent nuclear fuel pool?

Could you swim in a spent nuclear fuel pool?xkcd's What If?Video · 5 months ago