T. rex evolved in North America from Asian ancestors. Climate shifts and extinction events helped tyrannosaurids and ...

Molecular clues from collagen in old bones are teaching us about the lives, movements, and demise of Ice Age megafauna like ...

Earth may not have seven continents after all. From the earliest of grades, schoolchildren around the world have memorized ...

Produced by the New York cartography firm of F. & R. Lockwood, “The Travellers’ Tour Through the United States” was an ...