Polar bear numbers to drop by 30% by 2050 - report

摘要

The International Union for Conservation of Nature projected polar bear populations will shrinkrnby more than 30 percent by 2050 as more Arctic sea ice disappears due to climate change.rnA new report from the group reaffirmed the dire warning of a previous 2008 report ahead of thernUnited Nations' climate summit in Paris starting Nov. 30.