Unless the pace of global warming slows hoặc stops, polar bears could disappear within a century, says a trường đại học of Alberta expert in Arctic ecosystems.
While it has been known for some time that the polar chịu, gấu is in trouble, new research shows that Arctic ice - the polar bear's primary habitat - is melting much faster than scientists had believed, says U of A biologist Dr. Andrew Derocher.
"The climate predictions coming out are hiển thị massive changes in sea-ice distribution," đã đưa ý kiến Derocher, who follows polar bears to see how they adapt to changing conditions. If the predictions are correct,...
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