Oil Drilling Misgivings

FILE – In this March 29, 2013 file photo, a rig drills for natural gas which will eventually be released using hydraulic fracturing, or fracking, on leased private property outside Rifle, in western Colorado. Once drilling is completed, wells are fractured to allow the flow of gas from deposits typically more than a mile underground. Illinois and California officials are writing rules to implement their states’ first-ever laws to regulate hydraulic fracturing, but environmentalists still are pushing to halt the practice amid fears it could cause pollution and health problems.(AP Photo/Brennan Linsley, File)