What If We Nuked Mars?

Life on Mars might be like this. You’d live in giant glass domes, and grow small portions of food inside. And if you happen to go outside, it would be in your big...

What If You Skydived From the ISS?

410 kilometers (254 miles) above the Earth. That’s where the International Space Station floats. What if you happened to be all the way up here but suddenly fell...

What If All Humans Were Asexual?

Look at the world around you. What do you see? Sometimes a cigar is just a cigar. But mostly, it’s not. Why are we so driven by sex? Has it always been this way...

What If Two Black Holes Collided?

Black holes are the gravitational monsters of the Universe. They are so powerful that nothing, even light, can escape their grasp. One black hole is bad enough. But if...