The hydraulic fracturing technology that opened vast US natural gas shale resources could be snared in what one analyst calls “a regulatory race to the top.”

The industry is arguing that regulation of hydraulic fracturing should stay at the state level, where it is traditionally managed. Environmentalists disagree, saying the states’ record is spotty and tougher federal standards are needed. The Environmental Protection Agency is studying the issues, and aims for proposed rules in 2014. Keep reading →