Pollution

Court sides with industry on power plant emissions
Court sides with industry on power plant emissions
Supreme Court decision is a setback to one of the biggest environmental actions of the Obama administration.
Methane leaks from oil and gas production on federal lands
Methane leaks from oil and gas production on federal lands
New proposals from EPA and BLM to curtail leaks are due out this summer.
Mapping 7 million gallons of crude oil spills
Mapping 7 million gallons of crude oil spills
A thousand pipeline ruptures or spills reported nationwide in the past five years.
Natural gas leaks are dangerous and exacerbate climate change
Natural gas leaks are dangerous and exacerbate climate change
Plus, enough gas has escaped infrastructure since 2010 to heat 170,000 homes for a year.
EPA says fracking could contaminate drinking water
EPA says fracking could contaminate drinking water
Feds identify no widespread problem but concede to insufficient data.
Western cities ranked by most polluted air
Western cities ranked by most polluted air
Los Angeles and Fresno are worst, Prescott and Bellingham best.
New Mexico senator takes a beating over toxics regulation
New Mexico senator takes a beating over toxics regulation
Tom Udall’s bill could improve chemical safety — but has many opponents.
Latest: New air quality regulation for oil and gas operators
Latest: New air quality regulation for oil and gas operators
Wyoming will require companies to retrofit equipment
Courts force feds to consider climate impacts of mining coal
Courts force feds to consider climate impacts of mining coal
A Colorado mine sees the latest in a string of rulings that may threaten the industry.
The Los Angeles wetland wars
The Los Angeles wetland wars
Environmentalists saved a wetland from developers a decade ago. Now they’re trying to save it from each other.
Tom Udall tries to fix the nation's toxic chemicals law
Tom Udall tries to fix the nation's toxic chemicals law
Greens oppose the bill, though it's brokered by a champion of the environment.
For rural Oregonians, protections from herbicides come up short
For rural Oregonians, protections from herbicides come up short
Aerial spray regs remain the West Coast’s weakest after the death of a key law.
On a methane mystery tour in the Four Corners region
On a methane mystery tour in the Four Corners region
Scientists, planes and instruments descend on San Juan Basin to find roots of the massive greenhouse gas hotspot.
EPA loophole allows streams of wastewater in Wyoming
EPA loophole allows streams of wastewater in Wyoming
Environmentalists challenge permits that result in dumping of toxic chemicals on tribal land.
Unwanted California tires end up in rivers and beaches
Unwanted California tires end up in rivers and beaches
But efforts to use the trash as building materials in Mexico offer new hope.
Supreme Court wrestles with air-pollution rule
Supreme Court wrestles with air-pollution rule
Should the EPA have considered how expensive the new regs would be for operators?
BLM’s new fracking rules strike middle ground
BLM’s new fracking rules strike middle ground
But they're unlikely to resolve today's fierce skirmishes over oil and gas development.
Latest: New pesticide regulations for Oregon timber companies
Latest: New pesticide regulations for Oregon timber companies
Companies must now give officials at least a week’s notice before spraying.
Keeping the dust down in California’s Owens Valley
Keeping the dust down in California’s Owens Valley
A civil engineer battles Los Angeles over its air pollution legacy.
Latest: California fracking companies inject protected aquifers with wastewater
Latest: California fracking companies inject protected aquifers with wastewater
EPA found that state regulators allowed 2,500 to be contaminated.
Wastewater pipelines often leak in North Dakota
Wastewater pipelines often leak in North Dakota
Breaches in pipelines that carry water away from the oilfields can have devastating consequences.
Fractivists target Denver to build support
Fractivists target Denver to build support
A new campaign launches to stop fracking before it starts in and around Denver.
Fewer trade secrets for Wyoming fracking fluid
Fewer trade secrets for Wyoming fracking fluid
A court settlement will make it harder for companies to hide chemicals used in hydraulic fracturing.