Deep in the Amazon rainforest, a mysterious river stays at near-boiling temperatures year-round, baffling scientists. How is this possible, and what forces are keeping it so hot? Discover the ...

The Umatilla River once served as an important meeting ground for the Cayuse and their Nez Perce allies to the east. A large ...

The state's aggressive treatment has made major progress in killing off quagga mussels. Officials are awaiting results from their most recent round of treatments.

Some believe it’s time Montana addresses its inconsistent snowpack through a process known as cloud seeding. Goodman, 72, has ...

Perpetua Resources, the mining company planning to dig in the mountains outside McCall, promises to clean up the site — including the damage done by decades of previous mining.

Kelsey Grammer recently revealed to the New York Post the reason why he had a 30-year falling out with “Cheers” co-star Ted ...