It might be worse than letting climate change play out.

It can get aggressive.

Readers consider the effect of the Ocean Cleanup project on the neuston, an ecosystem at the water’s surface.

Giraffes’ blood pressure is double that of most humans, but it doesn’t seem to faze them at all.

But at what cost?

Cuckoos spend their early days murdering fellow nestmates. To pull it off, they start bodybuilding inside the egg.

After the vicuñas in Argentina’s San Guillermo National Park caught mange from domesticated llamas, the world around them changed.  

A single shot might someday replace spaying as a tool for cat-population control.

Scientists have been listening to Cross Seamount beaked whales for years—but they’ve never seen one.