News tagged with bears
President Obama Working to Reverse President Bush's Environmental Legacy
(PhysOrg.com) -- In the U.S., there is a tradition followed by outgoing presidents: Enact as many new policies as possible -- especially if you think that the incoming president would disapprove. This practice ...
Global warming impacting Greenlanders' daily lives
From his trawler that motors along the Nuuk fjord, fisherman Johannes Heilmann has watched helplessly in recent years as climate change takes its toll on Greenland.
Jul 09, 2009 |
4.5 / 5 (76) |
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True causes for extinction of cave bear revealed
The cave bear started to become extinct in Europe 24,000 years ago, but until now the cause was unknown. An international team of scientists has analysed mitochondrial DNA sequences from 17 new fossil samples, ...
Other Sciences / Archaeology & Fossils
Aug 24, 2010 |
4.3 / 5 (15) |
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Wild brown bear observed using a tool
(PhysOrg.com) -- Because brown bears are so reclusive, not to mention dangerous to be around, not a lot is really known about their brain power. This is actually rather odd because bears have the largest brains ...
Big Bear Solar Observatory captures sun's magnetic field
NJIT's new 1.6-meter clear aperture solar telescope—the largest of its kind in the world—is now operational. The unveiling of this remarkable instrument—said to be the pathfinder for all future, large ground-based ...
Space & Earth / Space Exploration
May 19, 2009 |
4.4 / 5 (13) |
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Scientists uncover surprising features of bear hibernation
Black bears show surprisingly large and previously unobserved decreases in their metabolism during and after hibernation according to a paper by scientists at the Institute of Arctic Biology at the University ...
Feb 17, 2011 |
4.7 / 5 (12) |
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Water Bears to Travel to Martian Moon, Test Theory of Transpermia
(PhysOrg.com) -- Tiny microscopic creatures commonly known as water bears (also called Tardigrades), along with a few other life forms, will be sent to the Martian moon Phobos to test whether organisms can ...
Polar bears no longer on 'thin ice': researchers say polar bears could face brighter future
In the snowy spring of 2009, Portland-based Marcot traveled with several colleagues onto the frozen Arctic Ocean north of Alaska to study and survey polar bear populations. These findings may have implications ...
Dec 21, 2010 |
4.5 / 5 (11) |
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Dramatic biological responses to global warming in the Arctic
"The Arctic as we know it may soon be a thing of the past," says Eric Post, associate professor of biology at Penn State University. Post leads a large, international team that carried out ecosystem-wide ...
Sep 10, 2009 |
3 / 5 (16) |
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Obama won't fight global warming with bear rules
(AP) -- The Obama administration, which promised a sharp break from the Bush White House on global warming, declared Friday it would stick with a Bush-era policy against expanding protection for climate-threatened ...
May 08, 2009 |
5 / 5 (8) |
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Arctic scientist under investigation
(AP) -- A federal wildlife biologist whose observation in 2004 of presumably drowned polar bears in the Arctic helped to galvanize the global warming movement has been placed on administrative leave and is being investigated ...
Jul 28, 2011 |
4.3 / 5 (9) |
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Panda genome resembles dog: Chinese media
A detailed genome map of the giant panda completed by Chinese scientists has shown that the notoriously shy animal is genetically similar to the dog, state media reported Sunday.
Dec 13, 2009 |
4 / 5 (9) |
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When hosts go extinct, what happens to their parasites?
(PhysOrg.com) -- Hands wring and teeth gnash over the loss of endangered species like the panda or the polar bear. But what happens to the parasites hosted by endangered species? And although most people would ...
Jun 01, 2009 |
5 / 5 (7) |
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Is cannibalism in polar bears on the rise?
(PhysOrg.com) -- A series of photographs of cannibalism in polar bears have been released, and the researchers who witnessed the act think the rate of cannibalism may be increasing. They observed three instances ...
Model shows polar ice caps can recover from warmer climate-induced melting
A growing body of recent research indicates that, in Earth's warming climate, there is no "tipping point," or threshold warm temperature, beyond which polar sea ice cannot recover if temperatures come back down. New University ...
Space & Earth / Earth Sciences
Aug 17, 2011 |
4.6 / 5 (7) |
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Bear
Bears are mammals of the family Ursidae. Bears are classified as caniforms, or doglike carnivorans, with the pinnipeds being their closest living relatives. Although there are only eight living species of bear, they are widespread, appearing in a wide variety of habitats throughout the Northern Hemisphere and partially in the Southern Hemisphere. That which pertains to bears is called ursine. Bears are found in the continents of North America, South America, Europe, and Asia.
Common characteristics of modern bears include a large body with stocky legs, a long snout, shaggy hair, plantigrade paws with five nonretractile claws, and a short tail. While the polar bear is mostly carnivorous and the giant panda feeds almost entirely on bamboo, the remaining six species are omnivorous, with largely varied diets including both plants and animals.
With the exceptions of courting individuals and mothers with their young, bears are typically solitary animals. They are generally diurnal, but may be active during the night (nocturnal) or twilight (crepuscular), particularly around humans. Bears are aided by an excellent sense of smell, and despite their heavy build and awkward gait, they can run quickly and are adept climbers and swimmers. In autumn some bear species forage large amounts of fermented fruits which affects their behaviour. Bears use shelters such as caves and burrows as their dens, which are occupied by most species during the winter for a long period of sleep similar to hibernation.
Bears have been hunted since prehistoric times for their meat and fur. To this day, they play a prominent role in the arts, mythology, and other cultural aspects of various human societies. In modern times, the bear's existence has been pressured through the encroachment on its habitats and the illegal trade of bears and bear parts, including the Asian bile bear market. The IUCN lists six bear species as vulnerable or endangered, and even "least concern" species such as the brown bear are at risk of extirpation in certain countries. The poaching and international trade of these most threatened populations is prohibited, but still ongoing.
For more information about Bear, read the full article at
Wikipedia.
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