Okay, so we actually do have lions and bears in North America. As well as cougars, wolves, and a variety of other predators. Not to mention a large variety of food for those predators. But apparently some guilt-ridden busybodies want to take African "megafauna" (i.e., very large animals, such as elephants, African lions, cheetahs, etc) and "re-wild" North America with them. You see, they feel bad that some species went extinct in North America at the end of the last Ice Age 13,000 years ago, and think that we ought to "fix" things. http://news.bbc.co.uk/1/hi/sci/tech/4160560.stm There are numerous, substantial problems and errors with this idea. 1. Large predators are dangerous to human beings. Just wait until these researcher's giant kitties start eating pets and children. 2. While ice age megafauna were clearly hunted by Homo Sapiens, we don't really know if it was Homo Sapiens that was responsible for their extinction. It could well be ...