Uploads from xkcd's What If?

Watch and track your favorite playlist.

Curated by: xkcd's What If? (82 videos)

---

Currently Playing: What if you used a microwave as a snowblower?

Can we suggest you use a jet engine instead? ©2026 xkcd, inc.

---

Tracks in this Playlist

• How long could you drive towards the sunset?
• What if the Moon were made of Protons?
• Weird and worrying questions
• What if half the human population ate the other half 🍽️
• How long could the human race survive on only cannibalism?
• What would a rainbow be like on Tatooine?
• What if you used a microwave as a snowblower?
• What if we turned the moon into a black hole?
• What if everything was antimatter EXCEPT Earth?
• What if you funneled the Niagara Falls through a straw?
• What if you had literally had all of the world's money?
• What if you dropped a bowling ball in the Mariana Trench?
• What would the world's largest cities be like if the land masses were rotated by 90 degrees?
• What would your country be like if the land masses were rotated by 90°?
• Could you power a house with the radioactivity from bananas?
• What would Earth's climate be like if the land masses were rotated by 90°?
• What would happen in Minnesota if the world rotated by 90 degrees?
• Why is the sky blue?
• What would happen if the Sun went dark?
• What if you kept digging downward?
• Which path would the three wise men have walked?
• Where would the three wise men go if they followed a planet?
• What if you floated upwards 1 ft every second?
• How many elevators would you need in a billion-story building?
• What if we built a billion-story building?
• What if you made a jetpack using rifles?
• What if you teleported to the Sun?
• What if you printed all of Wikipedia?
• How long would you survive with no DNA?
• What if we teleported the oceans to Mars?
• What if you drained the oceans?
• Can you power your computer by typing?
• What if everyone on Earth was in the same place and jumped at the same time?
• Could you swim in a spent nuclear fuel pool?
• What if ALL the sun’s power was focused in one place?
• Could you use a laser as an umbrella?
• What if you tried to hit a baseball pitched at 90% the speed of light?
• Can you drive west to lengthen the sunset?
• What would happen to the Earth if it suddenly stopped spinning?
• What would happen to the population if the Earth suddenly stopped spinning?
• Could we survive eating only humans?
• How detailed would the Hubbles images be if it looked at Earth?
• Could the Hubble take a photo of you?
• What if the Moon were made entirely of electrons?
• How fast could a vehicle go around a track - but the racer does not have to survive.
• How fast could a human accellerate (while staying alive)?
• What if you had a mole of moles?
• Petition to send a swimming pool to the moon!
• Circumference pop quiz!
• Could this be the last surviving human light source?
• Why Space Is Actually Warm!
• Could We Harvest Power From Lightning?
• What if the moon turned into a black hole?
• Is there such a thing as a magnitude 0 earthquake?
• How high could the magnitude of Earthquakes go?
• What if you funneled Niagara Falls through a straw?
• What if you used a flamethrower as a snowblower?
• What if you literally had all the money in the world?
• What if the sun suddenly went out?
• What if the Earth rotated 90 degrees?
• What if the wise men kept walking after Jesus’s birth?
• What if you built a billion-story building?
• What if we put a pool on the moon?
• But what if we tried MORE power?
• What if everyone pointed a laser at the moon?
• What if Earth grew 1cm every second?
• What if a glass of water were LITERALLY half empty?
• Could you survive a nanosecond on the Sun?
• What if we teleported the oceans to Mars?
• What if you tried to print Wikipedia?
• What if you drained the oceans?
• If all humans died, when would the last light go out?
• What if all the lightning on Earth struck the same place at once?
• What if everyone jumped at once?
• What if you swam in a nuclear storage pool?
• Would a Submarine Work as a Spaceship?
• Could you make an umbrella out of lasers?
• What if you threw a baseball at nearly light speed?
• What if Earth suddenly stopped spinning?
• What if NASCAR had no rules?
• What would a magnitude 15 earthquake be like?
• What if we aimed the Hubble Telescope at Earth?