The horseshoe-shaped Midcontinent Rift is a 2,000-kilometer scar that is also called North America's 'broken heart' by ...

The Midcontinent Rift is a giant tear that formed in what is now the U.S. Midwest 1.1 billion years ago. Nicknamed North ...

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

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

UNC-Chapel Hill history professor Kathleen DuVal recently won a Pulitzer Prize for her book, "Native Nations," which ...