melting sea ice
The oceans have heaved up and down as world temperatures have waxed and waned, but as new research tracking the past 2,800
Those figures do not include additional sea level rise caused by melting glaciers, by the melting of the Greenland ice sheet
Thirty years ago I led a campaign to save Antarctica. It was one of the best things I've ever done. It was enough for me to know that it was there, with its pristine beauty, incredible wildlife, and vast open expanses. I didn't need to see it to want to save it.
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Recently, the Canadian government has faced criticism for only listing these bears as a species of special concern -- a classification
Arctic sea ice loss during the 2013 melt season was equivalent to losing the entire area of states from Tennessee to Maine
To make a complex story simple, polar bears are threatened by habitat loss. We may hold onto polar bears as a species to the end of the century, but this is predicated on many hopeful elements.
There is no contradiction for global warming to cause dramatic sea ice loss in the Arctic and a slight expansion in the Antarctic. There is no doubt in my mind that the implications for polar bears habitat loss are serious and sobering.
A significant loss of sea ice can also aggravate global warming through what is known as the albedo effect. White ice reflects
Melting, cracking, splitting and calving in Earth's cryosphere may be the most dramatic embodiments of the climatic change. Why should all this melting ice matter to us? Here are a few reasons.