Human beings have existed for 300,000 years and have managed to live in many unstable environments. We’ve survived ice ages, ...

Some 390 million years ago in the ancient ocean, marine animals began colonizing depths previously uninhabited. New research indicates this underwater migration occurred in response to a permanent ...

This Michigan shoreline looks peaceful today, but the rocks underfoot tell a much older story. Standing on 390-million-year-old Devonian limestone, they begin finding marine fossils from a time when ...