Great Basin National Park sits at the eastern edge of the state. The park is home to a towering rock glacier and slow-growing groves of bristlecone pines, iconic trees with twisted limbs that have stood for centuries.

Host to over 41 million visitors a year, Las Vegas is bustling. But with an annual rainfall total under 4 inches, how does this desert oasis quench the masses and sustain itself, keeping water flowing and business thriving?

Matthew Lachniet is a paleoclimatologist who studies cave formations to get a record of past climate history.

The following are just a few of the ways “climate change now” made its full force known in the Rocky Mountains this year and showed its impact on everyday life.

Choking on ozone spikes, losing favorite hiking spots like Hanging Lake, sweating through fall school days — climate change is now.

DEEPER DROUGHTS POSSIBLE IN SOUTHWEST, SCIENTISTS WARN

The Colorado River Basin is enduring two decades of drought, and water shortages are on the horizon. But scientists say this isn’t the worst-case scenario.

The drought in the southwestern U.S. isn't new - it's actually a couple of decades old now.