USA - Park Narodowy Yellowstone

Bison in Yellowstone National Park on Oct. 18, 2018. Climate change is altering America's first national park so quickly that plants and animals may n...

Bison in Yellowstone National Park on Oct. 18, 2018. The Yellowstone of charismatic megafauna and of stunning geysers that four million visitors a yea...

Trees, and new growth, after a forest fire in Yellowstone National Park on Oct. 16, 2018. Climate change is altering America's first national park so...

Sour Creek in Yellowstone National Park on Oct. 16, 2018. Climate change is altering America's first national park so quickly that plants and animals...

An elk in Yellowstone National Park on Oct. 16, 2018. The Yellowstone of charismatic megafauna and of stunning geysers that four million visitors a ye...

An overhead view of the Grand Prismatic Spring in Yellowstone National Park on Oct. 16, 2018. Climate change is altering America's first national par...

An evergreen forest damaged by bark beetles in Yellowstone National Park on Oct. 15, 2018. Climate change is altering America's first national park so...

A visitor photographs Castle Geyser in Yellowstone National Park on Oct. 15, 2018. The Yellowstone of charismatic megafauna and of stunning geysers th...

A coyote in Yellowstone National Park on Oct. 15, 2018. Climate change is altering America's first national park so quickly that plants and animals m...

Visitors at the Grand Prismatic Spring in Yellowstone National Park on Oct. 15, 2018. Climate change is altering America's first national park so qui...

Lower Yellowstone Falls in Yellowstone National Park on Oct. 15, 2018. Climate change is altering America's first national park so quickly that plant...

Visitors take in the view of Lower Yellowstone Falls from a scenic overlook in Yellowstone National Park on Oct. 15, 2018. Climate change is altering...

Visitors take in the view of Lower Yellowstone Falls from a scenic overlook in Yellowstone National Park on Oct. 15, 2018. Climate change is altering...

A grizzly bear in Yellowstone National Park on Oct. 15, 2018. Climate change is altering American's first national park so quickly that plants and ani...

Bison in Yellowstone National Park on Oct. 15, 2018. Climate change is altering America's first national park so quickly that plants and animals may n...

Canada geese in Yellowstone National Park on Oct. 14, 2018. Climate change is altering America's first national park so quickly that plants and anima...

A bald eagle in Yellowstone National Park on Oct. 14, 2018. Climate change is altering America's first national park so quickly that plants and anima...

Ann Rodman, a park scientist, in Yellowstone National Park on Oct. 12, 2018. Climate change is altering America's first national park so quickly that...

Anglers fish for trout in the Gardner River in Yellowstone National Park on Oct. 13, 2018. Climate change is altering America's first national park s...

Trees, and new growth, after a forest fire in Yellowstone National Park on Oct. 13, 2018. Climate change is altering America's first national park so...

Trees, and new growth, after a forest fire in Yellowstone National Park on Oct. 13, 2018. Climate change is altering America's first national park so...

An elk at Mammoth Hot Springs in Yellowstone National Park on Oct. 12, 2018. Climate change is altering America's first national park so quickly th...

Ann Rodman, a park scientist, stands in a field of cheatgrass in Yellowstone National Park on Oct. 12, 2018. Climate change is altering America's firs...

Pronghorn antelope, with cheatgrass in the background, in Yellowstone National Park on Oct. 12, 2018. Climate change is altering America's first natio...