Add Yahoo as a preferred source to see more of our stories on Google. SANTIAGO (Reuters) -A seismic swarm that caused 160 quakes in two hours at the Laguna del Maule volcanic field in central Chile ...
SANTIAGO, April 11 (Reuters) - A seismic swarm that caused 160 quakes in two hours at the Laguna del Maule volcanic field in central Chile earlier this week has put authorities and citizens on alert.