Deep beneath California's Sierra Nevada mountains, geologists have found evidence of Earth's rigid outer layer sinking into the mantle, like a sugar cube slowly descending and dissolving into a pool of hot syrup.

The processes that form continental crust from the denser basaltic rocks of the upper mantle may make the lower lithosphere denser than the underlying mantle. One theory holds that the lower lithosphere splits away and sinks into the mantle in a process called foundering.

This morning, two NPR stations are partnering up: LAist's AirTalk and Nevada Public Radio's State of Nevada, for a joint broadcast looking at the population pipeline between Southern California and Southern Nevada.

Nevada Governor Joe Lombardo announced assets that will be sent to Southern California to help battle wildfires.

As our three-generational family with baby in tow pulls into Palisades Tahoe, a premier mountain resort in California’s Sierra Nevada Mountains, after a three-hour drive from Sonoma we are greeted with the Olympic flame – a reminder of having hosted the 1960 Olympics when this cherished ski destination was called Squaw Valley.

How dry is it in Southern California? See the drought levels and recent rainfall totals for several counties in the region.

Two Sacramento County men were arrested on Wednesday morning after attempting to rob cannabis farms in neighboring Nevada County, according to the Nevada County Sheriff’s Office. Deputies responded to the area of Flying T Rd.

Now known as Prometheus, the tree was found to be nearly 5,000 years old. That means Prometheus came into existence around the time humans were exiting the Stone Age and beginning to work with bronze. It was older than the Roman Empire, the Egyptian pyramids and Christianity.

Meanwhile, southern parts of the Sierra Nevada have below-average snowpacks, according to data from the California Cooperative Snow Surveys program. As of Jan. 13, the southern Sierra Nevada’s ...

Now the oldest known tree is another bristlecone pine in the White Mountains of California, named Methuselah. However, you can still find bristlecone pines in Nevada. Here's a look at the oldest ...

A Nevada judge has upheld the murder charge of the only suspect to ever be prosecuted in the 1990s killing of rap icon Tupac Shakur.

Matthew Wolden most recently served as the interim chief operating officer at University of California Health system hospitals in San Francisco.