Study: Warming May Be Taking Toll on Pikas
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Populations of the American pika &#151; a hamster-like rodent unable to survive in warm climates &#151; continue to decline in the West, apparently due in part to global warming, a new study says.
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A rise in the temperature of the world's oceans is often accompanied by mass extinctions, according to a new statistical study of fossil records.
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Two-thirds of the world's population of polar bears could die out over the next 50 years, as warmer weather melts away the thick sheets of sea ice where the bears spend much of their lives, according to studies released yesterday by the U.S. Geological Survey.
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Global warming could cause polar bears to go extinct by the end of the century by eroding the sea ice that sustains them, according to the most comprehensive international assessment ever done of Arctic climate change.
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Scientists have worries about the Arctic warming as they have determined that the ice in Greenland and the Arctic is melting too rapidly .
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Unless urgent action is taken to slow down global warming polar bears will be extinct by the end of the century. The stark warning is contained in an authoritative report compiled by more than 250 scientists on the effects of climate change in the Arctic.
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SILVER SPRING, Maryland  - A new movie showing young polar bears and walruses struggling toward adulthood in a melting Arctic puts a pair of charismatic faces on the global warming threat.
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The planet's temperature has climbed to levels not seen in thousands of years, warming that has begun to affect plants and animals, researchers report in Tuesday's issue of Proceedings of the National Academy of Sciences.
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Frogs, butterflies, polar bears, and penguins are dying out from climate change much faster than researchers had previously expected, a new study shows.
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Krill, the heart of the rich Antarctic food chain that nourishes whales, seals and penguins, have declined by more than 80 percent in the past 25 years in key ocean regions, according to a new study that links the loss to warming temperatures.
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Global warming over the coming century  could mean a return of temperatures last seen in the age of the  dinosaur and lead to the extinction of up to half of all  species, a scientist said on Thursday.
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ANCHORAGE, Alaska Â Frustrated by a lack of regulations limiting global warming, a conservation group wants ribbon seals listed as threatened or endangered because their habitat Â sea ice Â is disappearing amid climate change.
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Habitat loss, climate change and infectious diseases are pushing a growing number of species toward extinction, according to a report yesterday by the World Conservation Union.
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Lower summer temperatures and more winter snowfall could be contributing to glacier growth, a surprising find that may shed light on the regionally varying effects of global warming.
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Rising temperatures in the Arctic will likely increase the region&#39;s biodiversity as new species are drawn to the extreme north, but in a dramatic paradox many animals unique to the region, such as polar bears, risk extinction.
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A warming climate in the Washington area is beginning to affect the area's trees, with cold-loving species finding the weather less welcoming and southern transplants thriving, according to findings released yesterday by the National Arbor Day Foundation.
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Frost will become less and less common across much of the world as global warming accelerates, U.S. researchers reported on Wednesday.