Explosion at a Pennsylvania nursing home traps people inside, authorities say

An explosion at a nursing home just outside Philadelphia collapsed part of the building and left people injured and trapped inside, authorities said.A plume of black smoke rose from Silver Lake Healthcare Center in Bristol Township, as emergency responders across the region gathered there.Bucks County emergency management officials reported that there were injuries, but had yet to say whether there were any fatalities. County officials said they received the report of an explosion at approximate