Learn how geologists at Yellowstone National Park clean up hot springs filled with litter, saving them from irrevocable damage.

You may have heard that throwing rocks, sticks, or other items in hot springs in Yellowstone is a bad idea (and also illegal), but have you ever wondered what it ...

Yellowstone National Park’s grizzly bears are beginning to emerge from hibernation, and biologists have already documented the first sighting of the spring seas ...

A bison in Yellowstone National Park appeared to stumble into the scalding water of Grand Prismatic Spring, causing its death as tourists looked on during the park's busiest season. The bison fell ...

Yellowstone National Park’s Morning Glory Pool is not what it used to be. Back in the 1800s, the famous hot spring was a bright, clear, turquoise blue, and it was named after the flower it resembled.

Spring is officially here. When people think about an animal's appearance – or absence – signifying a particular season, most minds go to Punxsutawney Phil. The groundhog usually lets the world know ...

Biologists with Yellowstone National Park reported seeing the first grizzly bear of the spring season on Monday, according to a National Park Service press release.

A grizzly bear has been spotted in Yellowstone National Park, marking the end of hibernation and the start of bear season in the region.

Some of the prime attractions that make Yellowstone National Park stunning and unique are the park’s 10,000-plus hydrothermal features — geysers, mud pots, cauldrons, steam vents and hot springs. But ...

Yellowstone National Park has recorded its first grizzly bear sighting of the 2026 spring season. Biologists spotted the bear ...