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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,…
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…
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…
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…
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…