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The polar bear (Ursus maritimus) is a large bear native to the Arctic and nearby areas. It is closely related to the brown bear, and the two species can interbreed.The polar bear is the largest extant species of bear and land carnivore, with adult males weighing 300–800 kg (660–1,760 lb).
The 1958 Statehood Act set up a program for polar bear management, and further conservation efforts, including the 1972 Marine Mammal Protection Act, have limited polar bear hunts. [10] Polar bear populations may be threatened by oil development and global warming. [10] [11] Only about 4700 polar bears are known to inhabit Alaska. [12]
The key danger for polar bears posed by the effects of climate change is malnutrition or starvation due to habitat loss.Polar bears hunt seals from a platform of sea ice. Rising temperatures cause the sea ice to melt earlier in the year, driving the bears to shore before they have built sufficient fat reserves to survive the period of scarce food in the late summer and early fall.
Polar bears might be greasier than widely believed.. The bears’ greasy fur is the secret to the popular species’ survival in one of Earth’s most punishing climates. The grease, also known as ...
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Churchill, Manitoba, is known throughout the world as the place where hundreds of polar bears gather each fall to wait for the sea ice to return to Hudson Bay.The town is also a hub for Polar Bears International and several of PBI's programs including Tundra Connections webcasts [6] – free, live webcasts provided by polar bear and climate scientists and geared towards students, families and ...
Except for the brown bear (Ursus arctos) and the American black bear (U. americanus), the other six of bear species are threatened according to the IUCN Red List, including: the giant panda (Ailuropoda melanoleuca) the polar bear (U. maritimus) the spectacled bear (Tremarctos ornatus) the Asiatic black bear (U. thibetanus) the sloth bear ...
He emigrated to the US from the UK in 1997, and in the year 2000 co-founded the award-winning community-based education program, the Grizzly Bear Outreach Project (GBOP; now Western Wildlife Outreach, WWO), which was designed to bring scientifically credible information about grizzly bears and recovery to local communities of the North Cascades ...