Polar Bears Are Threatened By Toxic Chemicals Called Persistent Organic Pollutants Polar bears have become vulnerable to the threat of extinction in recent years due mostly to climate change, but there is another danger these mammals face. Find out how pollution is threatening polar bears in the Arctic. by Athena Chan
Science Russian Rocket Carrying Toxic Chemicals To Crash In Canada's Arctic Waters by Katherine Derla
Science Get up, close and personal with Arctic polar bears, courtesy Google Street View by James Maynard