A mass extinction event is already underway. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The present extinction rate of life on Earth doesn't ...

Scientists have documented five major mass extinction events in Earth's history, during which at least three-quarters of life went extinct. But with humans clearing habitats, exterminating species and ...

Researchers have gone back in time to find an extinction event that predates all other known events of their kind. The extinction event, which occurred during the Ediacaran Period roughly 550 million ...

The state endangered regal fritillary butterfly. (Photo courtesy of the Wisconsin Department of Natural Resources) With nature comes change. It’s seen in migrating birds, heard in frog songs, smelled ...

Earth is currently in the midst of a mass extinction, losing thousands of species each year. New research suggests environmental changes caused the first such event in history, which occurred millions ...

Today’s extinction rates are sky-high. But scientists debate if that’s sufficient evidence to conclude that Earth is undergoing a mass extinction event—or whether that’s even a helpful designation.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The most famous of ...

In what year will the human population grow too large for the Earth to sustain? The answer is about 1970, according to research by the World Wildlife Fund. In 1970, the planet's 3 and a half billion ...