Long before modern civilization, prehistoric America presented an environment that may have been hostile to early human ...

Long before modern civilization, prehistoric North Americans carved out lives in a continent full of challenges and opportunities. Their survival depended on a remarkable combination of ingenuity, ...

Did mammoths, sabre-tooth tigers and other Ice Age megafauna face a similar, impact-induced fate to the dinosaurs? That’s ...

Environmentalists are suing the federal government over what they say is a failure to protect the horseshoe crab, a ...