"For tens of millions of years before their ultimate demise, dinosaurs were beginning to lose their edge as the dominant species on Earth."

Thirty-nine of the species discussed in the new study no longer exist on Great Abaco Island in the Bahamas

Researchers discovered the reddish brown color of two extinct species of bat from fossils dating back about 50 million years

Environment-modifying organisms drove Earth's first mass extinction, and could do it again today

“Focused destruction can lead to surprising outcomes,” computer science professor says.

An international team of researchers has sequenced the nearly complete genome of two Siberian woolly mammoths—revealing the most complete picture to date—including new information about the species’ evolutionary history and the conditions that led to its mass extinction at the end of the Ice Age.

Most supposed impact indicators at 29 sites are too old or too young to be remnants of an ancient comet that proponents claim sparked climate change at the end of the Ice Age, killed America’s earliest people and caused a mass animal extinction