| http://www.w3.org/ns/prov#value | - The volume of older crucial sea ice in the Arctic has shrunk by 57% from the winter of 2004 to 2008. - Global warming effects in Alaska also include shrinking glaciers, coastal erosion and the march north of destructive forest beetles formerly held in check by cold winters.Rising sea levels And as land-based ice melts, such as the massive Greenland ice cap, sea levels could rise across the world,
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