What If South America Disappeared?

It’s been over 200 million years since South America broke off Africa into its own continent. But now it’s behaving very strangely. It’s taking on water and going down...

What If Planet Nine Exists?

Legend has it that somewhere beyond Neptune and Pluto, there is a ninth planet, with a mass that is five times greater than Earth’s. Planet Nine, also known by its...

What If Styxosaurus Was Alive?

You pop out of the ocean and hear the faint yells of the lifeguard. The whole beach panics. Your turn around. Something lurks in the water. Before you can say...

What If Our Mountains Collapsed?

Mountains. They’re born, they grow, they age and erode. And after a very, very long life, they turn to dust. What if all mountains collapsed at once? What are the...

What If Earth Was Twice as Big?

Doesn't it suck having a noisy neighbor? Or constantly running into your ex? We all need personal space, but often find we can't get enough. Don't you wish the world was...

What If You Moved an Entire City?

Coastal cities across the globe are planning how they will keep the sea away as it rises. One solution? Just move the city. How much would it cost? How do you lift a...

What If the Gulf Stream Stopped?

Our planet has seen this before. Its ice has already melted. Water levels have risen. Ocean currents have already stopped. The last time this happened was 13,000 years...

What If We Moved Earth?

Some 5 billion years from now, the Sun will expand and become a red giant. And the Earth might be just in the way… If humans were still around then, would we leave...