I realized Chicago people are less concerned about global warming. Well, now it is March and we will have more snow next week also, so I can understand why. But I found this interesting topic.
http://news.nationalgeographic.com/news/2006/05/bear-hybrid-photo.html
Article is little old but I think it is interesting and serious problem.
So this Polar Bear-Grizzly hybrid tells us how global warming are progressing fast right now. Usually Grizzly live at north of Alaska/Canada, and don't enter to Arctic often. But rising temperature made Grizzly enable to enter Arctic easily. Also rising temp. made Arctic ice to melt fast during summer time, so some Poler Bear would be left behind to land.
May be it is one cause of evolution. If so, all the Grizzly and Polar Bear will be gone soon and this hybrid will take all the north Arctic region.
