FILE - In a July 9, 1995 file photo, visitors walk down the ramp where Alex and Michael Smith were drowned in a car in 1994 in Union, S.C., by their mother, Susan Smith. Mothers kill their children in this country much more often than most people would realize by simply reading the headlines; by conservative estimates it happens every few days, at least 100 times a year. Experts say more mothers kill their children under 5 years of age than fathers. And, some say, our reluctance as a society to believe mothers would be capable of killing their offspring is hindering our ability to recognize warning signs, intervene and prevent more tragedies. (AP Photo/Lou Krasky, File)