Smithsonian Institution
National Museum of Natural History: American Mammals: Black Footed Ferret
Once widespread in the grasslands and western basins of North America, by 1987 Black-footed Ferrets were thought to be extinct in the wild. Captive animals were bred in an effort to save the species, and in 1991, some were reintroduced...
Smithsonian Institution
National Museum of Natural History: American Mammals: North Pacific Right Whale
The right whales have been driven nearly to extinction as the species preferred by commercial whalers and have been hunted in spite of international bans. There are perhaps several hundred in the western Pacific, and perhaps only a...
Smithsonian Institution
National Museum of Natural History: American Mammals: Utah Prairie Dog
The Utah prairie dog, extinct in more than 90 percent of its former range, is an endangered species protected by law. It now lives in a small area of southern Utah, between the ranges of Gunnison's prairie dog and the white-tailed...
Smithsonian Institution
National Museum of Natural History: American Mammals: American Bison
The American Bison's recovery from near extinction parallels what happened to the European Bison, Bison bonasus. Once abundant and widespread in northern latitudes, their decline in several countries since the 6th century has been...
Smithsonian Institution
National Museum of Natural History: American Mammals: White Eared Pocket Mouse
One subspecies of the White-eared Pocket Mouse may be extinct, and the other is extremely rare, consisting of isolated, relict populations near the western Mojave Desert in California. White-eared Pocket Mice are nocturnal and probably...
Other
Earth Sky: When Did Humans Start Altering Earth?
The ArchaeoGlobe Project assessed knowledge on human land use over the past 10,000 years, through the contributions of more than 200 archaeologists. It concluded that, by 3,000 years ago, most of Earth was already transformed by...
American Institute of Biological Sciences
Action Bioscience: Pygmy Rabbits in Peril in the u.s.a.
What is happening to the population of pygmy rabbits? This article identifies the research being done to understand what is causing the decline in rabbit populations around the world.
CK-12 Foundation
Ck 12: Biology: Biodiversity Crisis Study Guide
This comprehensive study guide covers the main terms and concepts needed for a unit on the biodiversity crisis.
Curated OER
Mother Polar Bear and Her Cubs Near Churchill, Manitoba
Polar bears have been officially listed as "threatened" under the United States Endangered Species Act. The belief is that the loss of Arctic sea ice in a warming climate could lead them toward extinction in less than four decades.Learn...
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