What If the Universe Is a Loop?

If you got into a spaceship, and traveled long enough and fast enough, could you eventually loop back to where you started? Assuming you don’t accidentally collide...

What If We Nuked the Mariana Trench?

Today we’re dropping a big bomb into the deepest part of the ocean. So grab a surfboard and get ready to hang ten on the waves of a massive nuclear tsunami. How would...

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 Russia Launched a Nuke?

Ever since Russia invaded Ukraine, the world has been afraid of one thing. Russia’s nukes. But what exactly would happen if Russian president Vladimir Putin...