This model reveals how vastly different the atmosphere was on ancient Earth, and how life may have first emerged. The key to unlocking the secrets of distant planets starts right here on Earth.

You’ve heard it before: we’re well into the sixth mass extinction of life on earth. Only this time, unlike the other five big ones, humans are overwhelmingly the killers responsible. As we continue to ...

The surface of our planet is a true geological theater where a permanent spectacle of movements and transformations takes place. These impressive phenomena result from plate tectonics, a unique ...