Smokestacks at the coal-fired Mountaineer power plant in New Haven, West Virginia.
Saul Loeb/AFP via Getty Images
In a 6-3 ruling, the Supreme Court held that an Obama administration plan to regulate carbon emissions from power plants exceeded the power that Congress gave to the Environmental Protection Agency.
Large portions of Oklahoma are governed, at least in part, by tribal jurisdiction.
crimsonedge34 via Wikimedia Commons
Local governments in Oklahoma are adapting to a 2020 Supreme Court ruling, but state officials have chosen a different path.
Coal piles outside of PacifiCorp’s Hunter power plant in Castle Dale, Utah.
George Frey, AFP, via Getty Images
West Virginia v. EPA could be the opportunity that conservative justices have been seeking to curb federal power.
Soybean plants on an Arkansas farm. Those at left show signs of damage from dicamba; others at right were planted later in the season.
Washington Post via Getty Images
Farmers are stuck in a chemical war against weeds, which have developed resistance to many widely used herbicides. Seed companies’ answer – using more varied herbicides – is causing new problems.
Chlorpyrifos is widely used on crops, including fruits, vegetables, nuts, corn and soybeans.
AP Photo/John Raoux
What kind of evidence does it require to get a widely used chemical banned? A professor of medicine and former state regulator explains how the case for chlorpyrifos as a threat to public health developed.
‘Cancer Alley’ is an 80-mile stretch of chemical plants along the Mississippi River in Louisiana alongside many Black and poor communities.
Giles Clarke/Getty Images
The US environmental justice movement dates back to the early 1980s, but federal support for it has been weak and inconsistent. Here are four things Biden’s EPA can do to improve that record.
President-elect Joe Biden opposes proposals to allow uranium mining around the Grand Canyon, which the Trump administration supports.
Michael Quinn, NPS/Flickr
The Trump administration has used executive orders, deregulation and delays to reduce environmental regulation. Biden administration officials will use many of the same tools to undo their work.
Firefighting foam left after a fire in Pennsylvania. These foams often contain PFAS chemicals that can contaminate water supplies.
Bastiaan Slabbers/NurPhoto via Getty Images
PFAS chemicals are toxic, widespread and persistent in the environment, and the federal government has been slow to regulate them. A scientist explains why evaluating them one by one isn’t working.
Fresno, California and the surrounding San Joaquin Valley have some of the nation’s highest levels of fine particle air pollution.
AP Photo/Gary Kazanjian
A new study shows that while fine particle air pollution has declined nationwide over the past 40 years, the health and environmental benefits haven’t been shared evenly.
Diesel emissions are a major source of fine particle pollution.
Bob Chamberlin/Getty Images
After a 5-year review, the EPA is leaving US standards for fine particle air pollution unchanged, even though recent studies suggest that tightening them could save thousands of lives yearly.
Earth Day 2020 in Guangzhou, China.
Thousands of Americans took part in the first Earth Day 50 years ago. What has changed since then?
Reducing fine particle air pollution from petrochemical complexes, like this one near the Houston Ship Channel in Texas, is a low-cost way to lower air pollution mortality.
AP Photo/David J. Phillip
A new study takes an innovative approach to reducing fine particle air pollution and spotlights key sources: factories that burn coal and oil, petrochemical plants and burning wood for home heating.
Starting Feb. 6, 2020, California growers will be barred from using the insecticide chlorpyrifos on grapes and other crops.
AP Photo/Eric Risberg
Starting Feb. 6, 2020, California farmers will be barred from using chlorpyrifos on their crops. The Trump administration says more study is needed, but other states are also moving ahead.
Blood samples from pediatric health screenings can provide valuable data for public health research.
AP Photo/Carlos Osorio
The EPA has just adopted a rule that limits what kinds of science regulators can use in setting rules. A scholar explains how this shift could impede his work mapping child lead poisoning.
Vehicles are a major source of particulate air pollution.
Scientists who were appointed to advise the EPA on air pollution kept meeting independently after the agency dissolved their panel. They say current regulations aren’t strict enough.
Many migratory birds, like these sandhill cranes, rely on wetlands for feeding, resting and shelter.
A 2006 Supreme Court ruling created widespread confusion about which wetlands and other waters are federally protected. The Trump administration’s latest action isn’t likely to clear things up.
Bottled water distribution in Glenwood, Iowa, where massive spring flooding along the Missouri River disrupted drinking water treatment, April 3, 2019.
AP Photo/Nati Harnik
A grade of 92 is an A at most schools, but for tap water it means that millions of Americans drink water that fails to met federal standards.
Oil refineries and other industrial sources in and around Houston create some of the highest ozone levels in the nation.
AP Photo/Pat Sullivan
Air quality in the US has improved greatly since 1990, but a new report finds progress stalling in some cities. Meanwhile, the Trump administration is rolling back air pollution controls.
Hoosick Fall, N.Y. is one of many U.S. communities whose drinking water has been contaminated with PFOA or PFOS.
AP Photo/Mike Groll, File
EPA is moving to regulate two chemicals from a group called PFAS that are contaminating drinking water. A public health expert explains why the agency should take much broader action.
Industrial facilities like this oil refinery in Anacortes, Washington are significant air pollution sources.
An air pollution expert with years of experience advising federal regulators describes how the Trump administration is speeding up reviews and reducing scientific input.