Over 400 million years ago, an upwelling of ... Research Letters. The ocean closed in the same spot that it opened, which is a common pattern in ocean life-cycles, Pastor-Galán said, but ...

In research led by the University of Exeter, scientists looked at two warm periods in Earth's past, about 50 million years ago ... zone life evolved in the last few million years, when ocean ...

Researchers have uncovered evidence of what led to the Triassic-Jurassic extinction about 201.6 million years ago. Columbia Climate School researchers suggest that sudden volcanic winter was the real ...