There is substantial evidence that lead poisoning, particularly that from leaded gasoline, is the causative element behind the violent crime spike and subsequen

There is substantial evidence that lead poisoning, particularly that from leaded gasoline, is the causative element behind the violent crime spike and subsequent decline: http://www.motherjones.com/environment/2013/01/lead-crime-link-gasoline http://www.motherjones.com/environment/2013/01/lead-crime-li...