Voters in Broomfield, Colo., narrowly approved a five-year moratorium on fracking in their suburban community, after a recount by county officials found the measure had passed by 17 votes out of 20,683 cast. This unofficial tally overturned an initial count that had voters rejecting the ban by 13 votes. Election officials met this week to complete the vote tabulation. Because of the close results, a mandatory recount likely will occur. The new results mean that all four Colorado communities with similar measures on the ballot this month voted to reject hydraulic fracturing, an oil-field technique that uses water, sand and chemicals to break open dense rocks. While fracking has led to an energy boom in the U.S., it also has prompted a significant backlash by people who say the process can cause earthquakes, water contamination and air pollution. The results in Broomfield, which is 15 miles north of Denver, […]