A keystone in an arch's crown secures the other stones in place. Keystone species play the same role in many ecological communities by maintaining the structure and integrity of the community.

After cougars were driven to extinction in the early 1900s, the endangered species is finally making a return in the ...

When sea otters were reintroduced along the coastlines of islands in Southern California and British Columbia, researchers ...

A group of microscopic sunflower sea star larva arrived at Shedd Aquarium last year and have been bulking up behind the ...

Rare and powerful compounds, known as keystone molecules, can build a web of invisible interactions among species.

The number of salmon returning to the Columbia and Snake rivers this year is expected to beat the 10-year average return. That’s according to a new report from the National Oceanic and Atmospheric Adm ...

Colossal Biosciences genetically engineered a ‘woolly mouse’ with mammoth traits. The milestone could inform human gene ...

This past week, beavers were legally released into the English countryside for the first time since they were hunted into ...