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...

What If All Men Disappeared?

How would the world change if, all of a sudden, every biological man disappeared? Would the world become more peaceful? Why would you have to ration food? And why...

What If Earth Went Rogue?

For billions of years, the Sun’s gravitational has kept Earth’s orbit on a steady and reliable path. But this rogue star has other plans for our planet. This...

What If the Ice Age Never Happened?

Imagine Earth covered in thick sheets of ice. And sea levels so low you could walk to a different continent. This is what our planet would look like during an ice age...

What If America Were Split Apart?

The Big One. Those three words make locals along the West Coast of North America shudder with fear. This area is plagued by earthquakes. But hey, at least they are ready...

What If It Rained Diamonds?

Some places in the Solar System have some pretty expensive rain falling on their surface. Let’s see if we could bring those home. What would it take for Earth to...

What If We Had Flying Cars?

Imagine an entire network of flying cars zooming around 2,000 meters (6,561 feet) above our congested city streets. Your morning commute would be a lot different up...