The oil and gas industry may be emitting more methane, a potent greenhouse gas, than previously thought, according to new estimates from the Environmental Protection Agency.
Methane can leak from wells, pipelines and compressor stations, among other things.
At an energy conference in Houston, EPA administrator Gina McCarthy said the administration is not planning to turn a blind eye to the oil and gas industry's increased contributions.
"The data confirm that we can and must do more on methane reductions in the oil and gas sector," she said.
The EPA released draft rules to cut methane emissions from oil and gas in 2015. Final rules are expected later this year.