Environment

A new study finds a link between warming waters and a dangerous neurotoxin that builds up in species like Dungeness crabs, clams and mussels — and can be hazardous, even fatal in people who eat them.

The newly created monument preserves 1.3 million acres in Utah where natives have foraged for millennia. But critics who point to the land's energy extraction potential want the designation undone.

This comes after a month of particularly severe air quality that left the capital and dozens of other Chinese cities blanketed in thick, brown smog.

The Pioneer Cabin Tree in Calaveras Big Trees State Park was one of California's few remaining tunneled-through sequoias. It was hollowed out more than a century ago.

Author Scott Carney talks about his new book, "What Doesn't Kill Us." Looking at case studies, Carney investigates how the body uses its environment to build resistance to normally extreme conditions.

About 90 percent of the fish Americans eat is imported, yet fish caught off our shores is often exported. New efforts are promoting locally caught fish, especially ones we've never appreciated before.

The American chestnut tree used to make up a quarter of the forests in the eastern U.S., but disease decimated these trees in the last century. Now there's an effort to restore the American chestnut.

If the rift gets long enough, Antarctica will lose a chunk of ice the size of Delaware.