A 45-year-old man shot and killed eight people in Erie, Pennsylvania, including a pregnant woman and two children, then apparently shot himself to death, authorities said on Saturday (local time) at a press conference where they revealed details of the previous evening's shooting.The shooter, who has yet to be identified, died of an apparent self-inflicted wound before officers arrived on the scene, said Erie Police Chief Rick Lorah."Some scenes stay with you long after you leave them. This...