Yosemite and Yellowstone, two iconic American national parks, offer distinct experiences. Yosemite boasts dramatic, cinematic ...

Native turtles return to Yosemite after removal of more than 16,000 invasive bullfrogs As part of the study, 16,384 American bullfrogs, larvae and egg masses were removed from Yosemite National Park.

Nature: Yosemite's "firefall" 01:59 Yosemite National Park, Calif. — A popular rock climbing area in Yosemite National Park has been closed because of a crack that's developed in a massive ...

Geologists have long debated why Yosemite Valley is so deep, with walls that tower up to 4,000 feet (1,219 meters) above the valley floor. The prevailing explanation is that in the last 10 million ...

It's very unlikely to happen in our lifetimes, but if the Yellowstone supervolcano were to erupt, scientists think the results could have a major impact on the surrounding areas. It could spread ...

Yosemite cutbacks cause concerns ahead of busy season 02:29. YOSEMITE — There could be a clash between federal workforce cuts and your family trip to Yosemite National Park.

Caltrans crews blast boulders on Highway 120 near Yosemite, ensuring safe summer travel. Tioga Road now open to connect Mono County and Yosemite.

Geology Yosemite's ultra-deep canyon may have been carved in part by a ghost volcano and river, ... The Yellowstone supervolcano's last cataclysmic eruption took place about 640,000 years ago, ...

Viral videos showing bison apparently fleeing Yellowstone National Park are not a sign that a super-volcano will be erupting soon, park officials said. "It's a natural occurrence and not the end ...