Photo Gallery: Cute Knut Makes Public Debut 03/23/2007
 Among Knut's first visitors on Friday was Sigmar Gabriel. The German...
REUTERS

Among Knut's first visitors on Friday was Sigmar Gabriel. The German Environment Minister, who is Knut's godfather, took a short walk with the bear cub. Gabriel warned on Friday that climate change is threatening the future of polar bears as a species. They live in the Arctic, and 10 percent of their habit has been destroyed. There are fewer seals to hunt and polar bears have been diminishing in weight.