World Erupting Calbuco volcano lights up the sky; ash causing concern

The Calbuco volcano erupted Wednesday afternoon for the first time in more than four decades, and had another spectacular outburst early Thursday sending lightning crackling through a dark sky lit orangish red by the explosion.

Twin blasts from the Calbuco volcano in southern Chile have sent vast clouds of ash into the sky, increasing concerns that it could contaminate water, cause respiratory illnesses and ground more flights.