Ron Dungan is a longtime environmental reporter in Arizona. Now, he’s out with his first book: "The Worst Fishing Dog Ever: ...

The tropical forests of the Amazon and Andes are some of the most biodiverse places on the planet, but across both regions, changes in climate and landscape conditions are driving a shift in the ...

Simultaneous emergencies in different parts of the world could stop countries from sharing ground crews and equipment, new research warns.

A Californian's stand against gas cars, mystery deepens in the killing of a Caltech physicist and more big stories ...