The negative impact of human activity on the planet didn't start with fossil fuels, say researchers. They push that milestone way, way back.

Groups of giraffes that include calves make different choices about where to spend time than all-adult groups, mainly to avoid predators.

California sea otters are a threatened species, and one of the things that kills them comes from cats on land.

"The global attention on the fires in the Amazon highlights the importance of these South American habitats, and these migratory birds illustrate an inextricable link between hemispheres."

A fake autonomous sink (with a researcher hidden behind a wall controlling things) proves there's potential for "smart sinks" to save water.

Trees are great at removing carbon dioxide from the air, which can help fight climate change, but how long will that help last?

In the last ten years, the impacts of overfishing, pollution, shipping, and other human activities on the oceans have doubled—and may double again.

Researchers examined more than a million corals one-by-one for a new study on what we can do to save reefs in the Indian and Pacific Oceans.

Environmental crime doesn't always take the form we might expect.

New research highlights a way of talking about environmental causes that appeals to both liberals and conservatives.