What If? The Video Series is the official adaptation of the ‘What If?’ books by Randall Munroe (xkcd.com) and is produced by Neptune Studios LLC
From xkcd’s What If?. Get a copy of What If? 2 and Randall’s other books at: https://xkcd.com/books More serious answers to absurd questions at: https://what-if.xkcd.com/ This question comes from Sean, who asks: what would happen if you were to gather a mole (the unit of measurement) of moles (the small furry critter) in one place?…
From xkcd’s What If?. I just totally nerd-sniped myself trying to figure out whether it’d be possible to do a Slip ‘N Slide loop-the-loop on the Moon.
From xkcd’s What If?. The math checks out! C = 2πr , if you increase the radius by one, the Circumference increases by 2π
From xkcd’s What If?. If all the humans suddenly disappeared, the last surviving human light source might be a solar-powered light in a remote location. ©2025 xkcd, inc.
From xkcd’s What If?. Space seems cold, but it’s actually warm! The particles in space can reach temperatures of thousands of degrees – but that doesn’t make space feel warm. The practical reason space feels warm is that it’s really empty! You don’t lose heat by conduction or convection, only radiation. Which isn’t a very…
From xkcd’s What If?. A typical lightning strike delivers enough energy to power a residential house for about two days. This sounds like a lot, but the energy from the sun outweighs the power supplied by lightning by a factor of a million. That’s another win for solar panels. ©2025 xkcd, inc.
From xkcd’s What If?. Get a copy of What If? 2 and Randall’s other books at: https://xkcd.com/books More serious answers to absurd questions at: https://what-if.xkcd.com/ This question comes from Matt, who asks: what would happen if the Moon were replaced with an equivalently-massed black hole? And what would a lunar ("holar"?) eclipse look like? Credits…
From xkcd’s What If?. I regularly cause magnitude negative three earthquakes. ©2025 xkcd, inc.
From xkcd’s What If?. While 10 isn’t the top of the scale, it might as well be. ©2025 xkcd, inc.
From xkcd’s What If?. Get a copy of What If? 2 and Randall’s other books at: https://xkcd.com/books More serious answers to absurd questions at: https://what-if.xkcd.com/ This question comes from David, who asks: what would happen if one tried to funnel Niagara Falls through a straw? Credits ******* Randall Munroe | Narrator Henry Reich | Writer…
From xkcd’s What If?. Get a copy of What If? 2 and Randall’s other books at: https://xkcd.com/books More serious answers to absurd questions at: https://what-if.xkcd.com/ This question comes from Matt, who asks: I’ve long thought about putting a flamethrower on the front of a car to melt snow and ice before you drive across it.…
From xkcd’s What If?. Get a copy of What If? 2 and Randall’s other books at: https://xkcd.com/books More serious answers to absurd questions at: https://what-if.xkcd.com/ This question comes from Daniel, who notes that people sometimes say “If I had all the money in the world …” in order to discuss what they would do if…
From xkcd’s What If?. Get a copy of What If? 2 and Randall’s other books at: https://xkcd.com/books More serious answers to absurd questions at: https://what-if.xkcd.com/ What would happen to the Earth if the Sun suddenly switched off? is probably the single most popular question submitted to What If. Credits ******* Randall Munroe | Narrator Henry…
From xkcd’s What If?. Get a copy of What If? 2 and Randall’s other books at: https://xkcd.com/books More serious answers to absurd questions at: https://what-if.xkcd.com/ What would the world be like if the land masses were spread out the same way as now, but rotated by 90 degrees? Credits ******* Randall Munroe | Narrator Henry…
From xkcd’s What If?. Get a copy of What If? 2 and Randall’s other books at: https://xkcd.com/books More serious answers to absurd questions at: https://what-if.xkcd.com/ This question comes from N. Murdoch, who was thinking about how the three wise men in the Christmas story followed a star to Bethlehem where they found the baby Jesus.…
From xkcd’s What If?. Get a copy of What If? 2 and Randall’s other books at: https://xkcd.com/books More serious answers to absurd questions at: https://what-if.xkcd.com/ This question came from Keira, who at age four and a half wanted to build a billion-story building. Actually, it came from Keira’s dad, who wanted to help Keira appreciate…
From xkcd’s What If?. Get a copy of the 10th Anniversary edition of What If? at: https://xkcd.com/what-if/ More serious answers to absurd questions at: https://what-if.xkcd.com/ What if there were a lake on the Moon? What would it be like to swim in it? Presuming that it’s sheltered in a regular atmosphere, in some giant dome…
From xkcd’s What If?. Get a copy of the 10th Anniversary edition of What If? at: https://xkcd.com/what-if/ More serious answers to absurd questions at: https://what-if.xkcd.com/ What if we tried a laser array with even MORE power? Credits ******* Randall Munroe | Narrator Henry Reich | Writer & Director Lizah van der Aart | Illustration and…
From xkcd’s What If?. Get a copy of What If? 2 and Randall’s other books at: https://xkcd.com/books More serious answers to absurd questions at: https://what-if.xkcd.com/ If every person on Earth aimed a laser pointer at the Moon at the same time, would it change color? Credits ******* Randall Munroe | Narrator Henry Reich | Writer…