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Animals

United States

The Future of Zoos

March 17, 2017

Experts say zoos need to better meet the needs of animals. For a mother and kids at the Philadelphia Zoo, in Pennsylvania, it was a close encounter of the ferocious kind. Directly in front of them was a Siberian tiger.…

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Technology

Clones, Clones, Everywhere

December 9, 2016

Twenty years ago, a sheep was cloned. Since then, cloning has become a big business. How far can cloning go? When Dolly the sheep was born, on July 5, 1996, history was made. Dolly was the first successfully cloned mammal.…

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United States

Where the Buffalo Roam

November 11, 2016

The North American bison is the official U.S. mammal. What does that honor mean for the bison’s long-term survival in the wild? For 234 years, the bald eagle has been an official symbol of the U.S. It is, after all,…

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Science

Earth's Cleaning Crew

October 28, 2016

Vultures play an important role in ecosystems. With vulture populations dropping fast, researchers are racing to save these strange birds. Vultures are often portrayed as scary creatures, circling above a wounded animal, waiting for its death—and their dinner. Their bald…

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Science

Return of the Grizzlies

October 7, 2016

Thanks to government protections, grizzly bears have bounced back from near-extinction. But can they survive in the wild without help? Grizzly bears have all but disappeared from the continental United States (see map). But there’s one place where the top…

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Environment

Shell Game

April 15, 2016

The ploughshare (plow -share) tortoise is one of the world's most endangered animals. Experts estimate that there are fewer than 300 adults in the wild. A small piece of land in northwest Madagascar is the species' only natural habitat. Because…

Science

Wildlife Detectives

January 22, 2016

It was June 6, 1989, and President George H.W. Bush had just placed a ban on all imports of elephant ivory into the United States. A wildlife inspector spotted a shipment of about 200 ornately carved ivory buttons. The person…

Environment

Bug Business

October 7, 2015

Chocolate-chip cookies. Banana bread. Brownies. What do these treats have in common? If they were made with Bitty Foods flour, they all contain a special ingredient: crickets. The company, which is based in San Francisco, California, wants to make insects…