What If We Built a City on Mars?

The next step in space exploration isn’t generations away. It’s happening right now. And our destination? That mysterious, desolate world next door, Mars...

What If You Fell Into a Volcano?

If you ever find yourself falling into a volcano, there are a couple of things you should know. First off, when you reach the bottom, the magma’s not going to...

What If the Universe Is Bouncing?

This is the Universe. And this little dot here is the Earth. And this is a Big Bounce coming up, and it’s about to squash our planet. Yikes. How long would we have...