Energy experts say drilling can be made cleaner

PITTSBURGH (AP) — In the Colorado mountains, a spike in air pollution has been linked to a boom in oil and gas drilling. About 800 miles away on the plains of north Texas, there's a drilling boom, too, but some air pollution levels have declined. Opponents of drilling point to Colorado and say it's dangerous. Companies point to Texas and say drilling is safe.

By: Kevin Begos and Seth Borenstein, Associated Press, The Jamestown Sun