“We want to fingerprint where the pollution comes from and analyze what happens when it mixes in the atmosphere,” a lead scientist on the project says.
The EPA intends to clarify which waterways are “Waters of the United States," to reduce confusion around the Clean Water Act. But critics fear the recent proposal is a power grab that could hurt farmers, ranchers and possibly the energy industry.
A new study links the spike in earthquakes in central Oklahoma to huge amounts of wastewater pumped underground by oil and gas operators.
The price of renewable energy from solar and wind is beginning to compete with fossil fuels.
This spring, the Colorado River flowed through Mexico after running dry for decades. Photographer Pete McBride was one of the few people to experience it by boat.
Increase would help pay for closing down older coal-fired plants, converting others to natural gas and paying off increasing property taxes.
Industry officials say restrictions will cost jobs.
Scientists are using robots to study the Greater Sage-Grouse to better protect the bird, which is threatened in Colorado.