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 Pangea Never Broke Apart?

Millions of years ago, the Earth looked very different. A huge landmass, called Pangea, covered about a third of our planet. But about 175 million years ago, the Earth...