• 北极熊在夏天需要节省小部分体能

    15-07-21 Polar bears are unlikely to physiologically compensate for extended food deprivation associated with the ongoing loss of sea ice, according to one-of-its-kind research conducted by University of Wyoming scientists and others, and published today in...

  • 陆地上的食物似乎不利于北极熊成长

    15-04-02 A team of scientists led by the U.S. Geological Survey found that polar bears, increasingly forced on shore due to sea ice loss, may be eating terrestrial foods including berries, birds and eggs, but any nutritional gains are limited to a few indivi...

  • 熊性恶血

    14-10-21 Mountain Yangdu is a sheer and serene mountain, and is a inclement place. But it is home to black bears. Black bears loathe blood in nature. If a black bear gets scratched by thorns when crossing a gorge, it will scratch the wound with its claw in o...

  • 人类食物对约塞米蒂黑熊饮食的影响

    14-03-05 Black bears in Yosemite National Park and elsewhere are notorious for seeking out human food, even breaking into cars and cabins for it. A new study reveals just how much human food has contributed to the diets of Yosemite bears over the past centur...

  • Goldilocks principle 金发姑娘原则

    13-11-12 The Goldilocks principle states that something must fall within certain margins, as opposed to reaching extremes. When the effects of the principle are observed, it is known as the Goldilocks effect. 金发姑娘原则指出,凡事都必须有度,而不能超越极限...

  • 密苏里州森林中重现野生黑熊

    13-07-22 For nearly a century, the only bears known to reside in Missouri were on the state flag or in captivity. Unregulated hunting and habitat loss had wiped out most black bears in Missouri, Arkansas and Oklahoma by the 1920s. Now, thanks to a reintroduc...

  • 北极熊祖先来自爱尔兰

    11-07-11 An international team of scientists has discovered that the female ancestor of all living polar bears was a brown bear that lived in the vicinity of(在附近) present-day Britain and Ireland just prior to the peak of the last ice age -- 20,000 to 50...

  • 北极熊不会使雪雁灭绝

    10-11-07 As the Arctic warms, a new cache of resourcessnow goose eggsmay help sustain(维持,支撑) the polar bear population for the foreseeable(可预知的) future. In a new study published in an early online edition of Oikos, researchers affiliated with th...

  • 俄某边远城市发布“遇熊逃生指南”

    10-10-25 Officials in a remote Russian city have drawn up a list of practical tips for locals on how to survive encounters with bears, after growing numbers have wandered into the streets in search of food. 俄罗斯某边远城市政府向当地居民发布了一份遇熊逃生指...

  • 美国黑熊

    10-03-05 American black bears appear in a variety of colors despite their name. In the eastern part of their range, most of these brown, red, or even yellow coats. To the north, the black bear is actually gray or white in color. Even in the same litter(一窝...