An environmental science professor and paleontologist has spent his career collecting Devonian Age marine invertebrate ...

At least two mass extinction events in Earth's history were likely caused by the 'devastating' effects of nearby supernova explosions, a new study suggests. Researchers say these super-powerful blasts ...

The Ordovician extinction killed 60 percent of marine invertebrates at a time when life was largely confined to the sea, ...

Some Devonian trees are known to have grown 100 feet (30 meters) tall. By the end of the period the first ferns, horsetails, and seed plants had also appeared. The new life burgeoning on land ...

The rate of stars going supernova near Earth appears to match two mass extinctions -- 372 million years ago and 445 million ...

At least two mass extinction events in Earth's history were likely caused by the "devastating" effects of nearby supernova explosions, a new study ...

At least two mass extinction events in Earth's history were likely caused by the "devastating" effects of nearby supernova ...