"WWF — Polar bear status, distribution & population" wwf.panda.org "WWF — Polar bear status, distribution & population" http://wwf.panda.org/what_we_do/wher...ar/population/ World Wildlife Federation According to the WWF World Wildlife Federation worldwide Polar bear status, distribution &; population WWF "WWF — Polar bear status, distribution & population" 19 distinct subpopulations "WWF — Polar bear status, distribution & population" http://wwf.panda.org/what_we_do/where_w ... opulation/ decline in population in 35 to 50 years World Wildlife Federation World Wildlife Federation World Wildlife Federation believed to be at risk believed to be at risk Polar bear status, distribution &; population "WWF — Polar bear status, distribution & population" 60 to 80 percent "WWF — Polar bear status, distribution & population" According to the WWF http://wwf.panda.org/what_we_do/wher...ar/population/