Yellowstone National Park

Grizzly Bear in Yellowstone National Park

Federal Judge Cancels Yellowstone Grizzly Hunt, Restores Species Protections

The judge found that the United States Fish and Wildlife Service had acted ‘arbitrarily and capriciously’ in removing federal protections for the species

Yellowstone's Biggest Geyser, Steamboat, Has Trio of Eruptions

It's the first triple eruption in 15 years—but don't worry, it's not a sign the Yellowstone volcano is ready to blow

Winter recreationists circa 1975.

The Snowmobile Changed How Americans Did Winter

As the cold comes in, snowbound communities are tuning up their vehicles and recreationists are making speedy winter plans

Of the roughly 900,000 Rocky Mountain elk in North America, some 20,000 migrate through the Greater Yellowstone Ecosystem.

Photos Document Dramatic Wildlife Migrations Across Yellowstone

A new book documents the growing challenges faced by wildlife as they migrate across the Greater Yellowstone Ecosystem

Five Things to Know About the Yellowstone Supervolcano

There's no need to worry: It's unlikely it will blow anytime soon

A 2014 eruption of Old Faithful, one of its many consistent outbursts

Geologists Map the Plumbing Beneath Yellowstone's Old Faithful Geyser

Without turning over a stone, geologists imaged the subsurface supply for this iconic geyser

Grizzly in Yellowstone National Park

Yellowstone Grizzly to Be Removed From Endangered Species List

Their numbers have grown from 136 animals in 1975 to roughly 700 today

Why Elk Calves Are Undetectable to Yellowstone's Wolves

In Yellowstone, elk calves are left unprotected by their herd and are the easiest prey for wolves to catch. Luckily, the newborns have no scent

In Mexico's Monarch Butterfly Biosphere Reserve, America's most beloved native insect faces threats from illegal loggers and avocado growers.

The Best Way to Protect the World’s Forests? Keep People in Them

Instead of kicking indigenous groups out, let them continue to manage these lands effectively, argues a new report

Why the U.S. Army Guarded the 23 Remaining American Buffalo

In 1882, General Philip Sheridan's expedition to the protected buffalo haven in Yellowstone National Park revealed a gruesome reality

How Yellowstone Scientists Really Combat Invasive Species

Yellowstone cutthroat trout are on the brink of extinction as invasive lake trout continue to eat them

A pair of bison hang out in the snow at Yellowstone National Park, one of the United States' best spots to see the huge mammals.

American Safaris: Where to See the Biggest Mammals in the U.S.

Go wild for the United States' largest mammals and take an American Safari

Front and back of the letter written by Charles Darwin to Ferdinand Vandeveer Hayden on May 2, 1875

A Letter Written by Charles Darwin, Twice Stolen, Returns to the Smithsonian

After being snatched by an intern in the mid 1970s, the missive written by the scientist returns to Washington

Why You Might Start Seeing Disney And Other Brands in National Parks

Relaxed rules on donor recognition could allow corporate sponsors to fund items within National Parks

Yellowstone's Grand Prismatic Spring is the largest hot spring in the park. But what gives it its vivid rainbow colors?

The Science Behind Yellowstone's Rainbow Hot Spring

The Grand Prismatic Spring might seem photoshopped, but there's very real science beneath its vibrant colors

Scarface is dead—long live Scarface.

Yellowstone’s Most Famous Bear Is Dead

Who shot “Scarface”?

Arches National Park

Marathoner Sets Out to Run All of America's National Parks

Autumn Ray's goal: 59 national parks before she turns 40 in four years

Ice patches that normally persist through the summer are melting in Yellowstone National Park.

Melting Ice in Yellowstone is Revealing Ancient Artifacts Faster Than Researchers Can Handle

The tools, spears and even baskets from ancient Native Americans are emerging faster than archeologists can collect them

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Ask Smithsonian: Could the Volcano Beneath Yellowstone National Park Ever Erupt?

The good news is that an eruption there is highly unlikely, but the bad news is that it would be huge

Should People Be Allowed to Boat Through Yellowstone?

Conservationists and recreational paddlers are split on whether to open up remaining National Parks waterways to boaters

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