How did woolly mammoths survive the last ice age? And how thick was the ice over New York City? Test your knowledge by taking ...

How's your knowledge of Earth's geology? Flat, round or global?

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Earth is a complex place, home to many different landforms and shaped by processes like tectonics and erosion. How much do you know about our home planet? Test yourself and find out!

It is a unifying theory that underpins biological science, explaining how all life on Earth developed from single ... you know about evolution? Take our quiz to find out.

Plate tectonics is the science of how continent-size slabs of crust form Earth's outermost layer and constantly move and regenerate. Most move less than a couple inches per year, according to ...