By altering the definition of the word "harm" as used by the Endangered Species Act, the Trump administration may limit how wildlife is protected in the United States. Environmental groups are suing.

Across the West, reservoirs and wells are running low.

There is an international effort to save the African penguin from being functionally extinct within 10 years.

For some electric vehicle batteries, it costs more to recycle them than they're worth. That creates all kinds of problems, which a new Colorado law aims to solve.

The Trump administration finalized a rule Friday that changes how agencies enforce the Endangered Species Act. The administration narrowed the definition of "harm" under the landmark law.

Most Americans oppose the construction of artificial intelligence data centers, in part because they require a lot of water to cool down servers that generate heat. But how much water do they really use, especially when compared to agriculture?

The Trump EPA calls Biden-era rules for cutting pollution from heavy trucks "unworkable." The proposed changes have been celebrated by trucking groups and denounced by environmental groups.

Inspired by diving birds, roboticists built the lightweight machines to move from water to air. The design may one day lead to robots that can monitor and sample the coastal ocean.

Beach towns along the Atlantic Ocean are adjusting to large amounts of seaweed that floats onto their beaches each summer. It's sargassum season.

The razorback sucker has been swimming in the Colorado River for an estimated 5 million years before humans nearly fished them out of existence. Now, high schoolers are teaming up with a local baseball team and the U.S. Fish and Wildlife Service to save this beloved fish.