Millions of years ago, dinosaurs roamed the earth – including the land that we now call America. We have been able to find ...

Each of these books can, in its own way, teach readers how to think about Earth's history, and how to apply lessons from the past to our future.

An ancient and enormous organism called Prototaxites, initially found to be a type of fungus, may actually be an unknown branch of life, researchers say. When you purchase through links on our site, ...