The climate-change clock is ticking on the world's polar bears and a group of Canadian and U.S. scientists say they've determined when that time will run out. The researchers had enough information on projected ice conditions to forecast for eight of the 14 Canadian bear populations. Under a business-as-usual scenario, reproductive failure would become inevitable for Hudson Bay and Davis Strait bears beginning in the 2060s. "With business-as-usual greenhouse gas emissions, polar bears are going to be gone from probably everywhere except the very High Arctic," Molnar said. Field studies in western Hudson Bay found bears healthy and fat through the 1980s, then with declining reproductive success and body condition into the late 1990s.

Source: CBC News July 20, 2020 18:45 UTC