Some places on Earth look so unusual that they feel out of place at first glance. These landscapes exist because of rare ...

We have an extremely incomplete picture of what these snowball periods looked like, and Antarctic terrain provides different models for what an icehouse continent might look like. But now, researchers ...

Have you ever wondered what the world would be like if everyone suddenly disappeared? What would happen to all our stuff? What would happen to our houses, our schools, our neighborhoods, our cities?

Most of us think we know what Earth looks like. Then you stumble on a place that doesn’t fit the script—salt that turns the ground into a perfect mirror, rock formations that look sculpted by ...