Polar bears are inbreeding due to melting sea ice, posing risk to survival of the species, scientists say - ABC News

The outlook for the survival of polar bears is appearing even more precarious by factors induced by climate change.
Researchers found up to 10% less genetic diversity in the last 20 years.
The bears spent the day rolling and sliding down a snowy hill at Yorkshire Wildlife Park in the U.K.

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Polar bear inbreeding on the rise as they struggle to survive