Yosemite

Big Basin Redwoods State Park, California's oldest, totals 18,000 acres, all of which are "gone" after the CZU August Lightning Complex fire ripped through it this week.

On Thursday, the Yosemite National Park reported that 170 people had experienced a gastrointestinal illness, and two of them have been confirmed to be a norovirus.

The Southern Sierra Miwuk Nation has been petitioning for federal acknowledgement since 1982, but the Office of Federal Acknowledgement has repeatedly declined to recognize the group as a real tribe.

Park rangers recovered two bodies on Thursday.

The fire had reached 60 acres by Tuesday afternoon.

One firefighter has died, and another was injured Tuesday afternoon while working to contain the blaze.

The wildfire has spread to 9,266 acres.

Hundreds of firefighters are battling the blaze southwest of the national park.

UNESCO has identified 1092 sites worldwide for protection because of their cultural, historical or scientific value or other significance. Here are the ones in North America.

"This Starbucks development is a glaring slide down a slippery slope," the petition states. "When will it stop?"

Fish don't live in this lake because the chemicals are too harsh. But these flies cover themselves with air bubbles to survive.

First Bears Ears, now the Grand Canyon.

First, Interior Secretary Zinke wants to privatize campgrounds in national parks.

The 2,000 residents of the town of Mariposa, in the Sierra Nevada mountains southwest of Yosemite, were ordered to leave as the Detwiler fire approached.

Nearly a century after Woodrow Wilson established the NPS, it looks ahead to the next century.

A hardened mountaineer explains the mind-bogglingly difficult climb the two young men faced on El Capitan, Yosemite.

Tommy Caldwell and Kevin Jorgeson talk about their historic Yosemite climb, and ask: "What's your Dawn Wall?"

Tommy Caldwell and Kevin Jorgeson became the first ever to free climb Dawn Wall when they topped out Wednesday.

Social media is letting the public follow outdoor and even interstellar adventures from the comfort of their couches.