Science magazine has compiled data made available for the first time on Afghan civilian deaths. The magazine's research shows the number of Afghan civilians killed during the last two years is on the rise:
(ISAF stands for International Security Assistance Force.) The New York Times reports that almost 90 percent of the Afghan civilian deaths were caused by insurgent attacks, with the remaining deaths the result of actions by "American and coalition forces."
Here's video of Science magazine reporter John Bohannon explaining his research, courtesy of USA Today: