I've just heard a news report on the radio about a bear attacking campers in Yellowstone National Park- one person was killed and two were injured. Oh great, just as I am about to hit the road again with plans to camp, I hear that sort of news. I'm already very wary about bears after my close encounters in Alaska. 

Trying to get more information via the Internet I came across the following info on Wikipedia, a morbidly fascinating list of fatal bear attacks over the years.

http://en.wikipedia.org/wiki/List_of_fatal_bear_attacks_in_North_America