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Endangered Species

As ocean water becomes more acidic, corals and shellfish must spend more energy to make their calcium carbonate shells.

A Swim Through the Ocean’s Future

Can a remote, geologically weird island in the South Pacific forecast the fate of coral reefs?

It has been reported that by the end of the century, redheads will be extinct.

Requiem for the Redhead

The next great extinction—Carrot Tops

The Cassowary bird at Lahore Zoo.

Invasion of the Cassowaries

Passions run high in an Australian town: Should the endangered birds be feared—or fed?

Condors can soar 150 miles in a day on their giant wings. The birds often fly for hours at a time with hardly a flap of their wings

Condors in a Coal Mine

California’s lead bullet ban protects condors and other wildlife, but its biggest beneficiaries may be humans

American Laurie Marker (with Chewbaaka, a cat she raised after it was caught in a trap as a 3-week-old) is the world's expert on cheetahs.

Rare Breed

Can Laurie Marker help the world’s fastest mammal outrun its fate?

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Q&A With the Rhino Man

Wildlife biologist Hemanta Mishra’s efforts to save the endangered Indian rhinoceros

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Saving the Cheetah

National Zoo scientist Adrienne Crosier discusses how scientists are using artificialinsemination to rescue the species

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UPDATE: State of Emergency

The latest on the endangered mountain gorillas in war-ravaged Congo

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On the Prowl

Rare jaguar sightings have sparked a debate about how to ensure the cats’ survival in the American West

A fungus from a group that ravages trees around the world is now infesting New Zealand's ancient, symbolic kauris.

A Pox Upon the Kauri

New Zealanders rally to save their much-loved, 2,000-year-old national symbol

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Turning the Tide

Our oceans are in trouble, says Nancy Knowlton. But it’s not too late to do something about it

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Flying North to Fly South

Preparing the critically endangered whooping crane for migration could save the flock

Of the 21 albatross species, 19 are threatened or endangered. The Chatham albatross is critically endangered, with only about 11,000 of the birds remaining.

The Amazing Albatrosses

They fly 50 miles per hour. Go years without touching land. Predict the weather. And they’re among the world’s most endangered birds

Bald Eagle

Bald Eagle Soars off Endangered Species List

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Russia Claims North Pole, Endangers Wildlife

Two days after the killings, villagers poured in to help rangers carry bodies back to Bukima and then on to Rumangabo for burial. Here, volunteers are taking the pregnant and badly burned Mburanumwe out of the forest.

State of Emergency

The slaughter of four endangered mountain gorillas in war-ravaged Congo sparks conservationist action

The native westslope cutthroat trout (named for the slash of red on its throat) is staging a comeback after decades of losing ground to its immigrant cousins in the Rocky Mountains.

Native Trout Are Returning to America’s Rivers

Native trout are returning to America’s rivers and streams, thanks to new thinking by scientists and conservationists

"If we want to ensure free-ranging devil populations that are disease free, putting them on offshore islands is the only alternative we've got," says wildlife researcher Hamish McCallum.

Tasmanian Tailspin

Can a new plan to relocate the Tasmanian devil save the species?

Among the best hunters in Africa, wild dogs have a higher kill rate than lions and can take down antelope that weigh as much as 500 pounds. They are notorious for a grisly efficiency that has made some people fear and hate them, if not shoot them on sight.

Curse of the Devil’s Dogs

Viewed as pests, Africa’s wild dogs have nearly been wiped out. But thanks to new conservation efforts, the canines appear ready to make a comeback

Zion's dwindling cougar population traces its roots to the late 1920s, when the park's management made efforts to increase visitation.

It All Falls Down

A plummeting cougar population alters the ecosystem at Zion National Park

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