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Polar Bear Threatened With Extinction
- The U.S. Fish and Wildlife Service formally proposed to list the polar bear as "threatened with extinction" under the Endangered Species Act. This follows a multi-year court battle by environmental groups to protect the bear from the impacts of global warming in the Arctic, including the rapid disappearance of the polar bear's sea-ice habitat.
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Discoveries: Fish Mating Calls
(5:43)
See how scientists solved the mystery of a relentless sound coming through the walls of people living near the Florida coast. Learn more about fish mating in this video.
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Electricity From Spinach
(1:31)
Watch this video about electricity from spinach on HowStuffWorks. MIT researchers have created a spinach-powered solar battery, harnessing the ability of plants to convert sunlight into electricity. Learn how to generate electricity from spinach in... More »
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Creating Headless Clones
(1:54)
It is possible to create a headless clone of a tadpole, suggesting that it would also be possible to clone organs without having to create a complete individual.
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FYI: Cockroaches
(1:19)
Most people hate roaches, but these little bugs are the ultimate survivors. Learn what makes cockroaches tick by watching this video from the Discovery Channel.
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Wild and Weird Rockets: Gila Monster
(2:44)
The Gila Monster is probably the biggest homemade rocket you've ever seen in your life. Check it out in this video. Brought to you by the Discovery Channel.
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Growing Living Organs in a Lab
(0:58)
U.S. researchers have grown a living and beating heart in a lab. Scientists from the University of Minnesota took hearts from dead rats and injected them with heart cells from newborn rats; the hearts then came to life. Video courtesy of Reuters.
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Dr. G: Tools of the Trade
(6:10)
See the wide range of tools -- both high-tech and simple -- that are used to perform autopsies. Learn more about the daily grind of a medical examiner in this video from Discovery.
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Polar Bear Alcatraz: An Uncertain Future
(2:14)
These polar bears face an uncertain future on Wrangel Island. Can they survive global warming?
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