What About Polar Bears and Arctic Warming and Antarctic Cooling?
Polar bears have endured warmer periods than are forecast by IPCC. They evolved into their present form some 700,000 years ago (or 100,000 years ago) (or 200,000 years ago) (or before the beginning of the last interglacial) and their molars changed some 10,000 to 20,000 years ago. Importantly, polar bears were likely present in some final version of their present form, during the last interglacial (130-110,000 years ago), as late 2007 research indicates, when there was virtually no ice at the North Pole and average Arctic temperatures at that time were 5.7 to 9.5 deg. F (3 to 5 deg. C) higher than present (IPCC, 2007). This date of evolution should be determined factually, as a first step, before taking action. If polar bears survived the past interglacial, as late 2007 findings indicate, the present warming may be of little consequence. In any case, the 20 polar bear populations need to be looked at individually, in terms of their threats and adaptability, and the management systems that govern their conservation.
The Arctic reaches record low ice coverage in 2007. The press trumpeted this every few days in the summer of 2007. Further down the page on the monitoring sites of major institutions was some additional news. Antarctic ice coverage at the same time was at or above the highest levels ever recorded. For example, see the University of Illinois Cryosphere Program. In each case, reliable measurements date only from the arrival of satellite data in the 1970s, another usually omitted fact. However, since the Northwest Passage was open to sailing vessels in 1903-1905 (Gjøa/Roald Amundsen), and again in 1940-42 and 1944 (St. Roch), it is possible this recent reduction in Arctic ice is not an indicator of warming. The return of Arctic sea ice in 2008 to levels at lest 30% greater .....
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