A Pittsburgh mom faces felony child endangerment charges after her 3-year-old daughter was found standing outside nearly naked in near-freezing conditions. Pittsburgh police say a subsequent investigation determined the girl and her two siblings _ an infant and a 6-year-old _ were living in filthy conditions in a rowhouse. Authorities say a passing motorist called 911 after seeing the girl standing on the sidewalk in front of the rowhouse on March 18 with only a towel covering her.