Our planet has been asteroid-smashed, melted and eroded, enough that most of its original armor has been long buried. Except ...

Priscilla Diane Chapman Frisch, a University of Chicago Research Professor in Astronomy and Astrophysics and a world-leading ...

Geologists from the University of Hong Kong (HKU) have made a breakthrough in understanding how Earth's early continents ...

From Alaska across southern Canada all the way south to Tierra del Fuego — the southernmost point of South America — ...