Polar Bears at the San Diego Zoo (in HD)

Polar Bears at the world- famous San Diego Zoo. For a while, polar bears were in trouble. People killed them just for trophies, and they were losing some of their wild places to live as people started moving into their territory. Global warming has affected polar bears as well, as ice sheets are melting, preventing the bears from traveling in search of food. Many countries got together to help this magnificent bear by preserving its habitat and setting up hunting restrictions. Polar bears still need our help. People must continue to give these bears large, safe places to live, and try to keep the environment clean and free of pesticides that could poison the bear's food.