Scientists are working to pinpoint the source of a giant mass of methane hanging over the southwestern U.S., which a study found to be the country's largest concentration of the greenhouse gas.
Repeated natural-gas accidents — including a pipeline explosion that killed eight people — suggest that Pacific Gas & Electric Co., California's largest power utility, may be too big to operate safely, the state's top utility regulator says.
A network of pipes relentlessly pumps toxic runoff into a man-made lake of "sludge."
Billionaire Michael Bloomberg says he is donating an additional $30 million to a Sierra Club initiative working to reduce the nation's use of coal.
Attorneys for Royal Dutch Shell PLC on Tuesday sued in federal court to remove six Greenpeace activists who boarded a vessel carrying an oil-drilling rig leased by Shell across the Pacific.
Residents in northeast Ohio are waiting to hear from state environmental officials whether their water is safe to drink following a chemical spill at an injection well facility.
As the earthquakes in Oklahoma increase, the debate over the link between seismic activity and fracking rages on.
Oil companies say they can clean up offshore spills far faster today than five years ago when BP's Macondo well blew out 45 miles (72 kilometers) off the coast of Louisiana, spawning the nation's worst offshore oil spill.
U.S. authorities have determined that the highly toxic pesticide methyl bromide caused a Delaware family to become seriously ill at a U.S. Virgin Islands resort, and that the chemical was used at the resort several times in the past year.
The 400-foot Polar Pioneer, owned by Transocean Ltd., was on board a heavy-lift vessel about 750 miles northwest of Hawaii when the activists approached in inflatable boats and used climbing gear to get on board.
Fuel-hauling tank cars need retrofits to prevent more explosive train wrecks — and the public can't wait another decade for the improvements as has been suggested by industry, U.S. safety officials said.
Obama is aiming to put a spotlight on ways that climate change will have real impacts on the body, like more asthma attacks, allergic reactions and injuries from extreme weather.
Here's what you need to know about the four-page proposal.
Various factors — including insecticides, habitat loss and disease — steadily reduced honeybee populations for decades, but research suggested the rise in neonicotinoids resulted in a recent spike in those population losses.
While already the world's third-largest emitter of carbon dioxide, a potent greenhouse gas, India is still home to at least 300 million people with no electricity at all, while hundreds of millions have just a couple of hours a day. Bringing them all onto a 24-hour electricity grid fueled primarily by coal could jeopardize global efforts to prevent the worst effects of climate change.
More than 100 property owners in West Virginia are being sued by the developer of a proposed natural gas pipeline.
Following a spate of explosive accidents involving North Dakota crude, the state began requiring companies on Wednesday to remove certain liquids and gases from oil before it's loaded onto rail cars — a move industry and state regulators believe will make for safer shipments.
North Dakota, whose oil riches have been unlocked by the use of hydraulic fracturing, said Tuesday it will join Wyoming in a lawsuit challenging a new federal rule requiring more information about the process when it's used on U.S. government lands.
The Department of Interior said Tuesday that it has affirmed corrections to an environmental analysis of a 2008 Arctic Ocean petroleum lease sale that brought in $2.7 billion for the federal government.
VICE News traveled to Glendive, Montana, to visit the site of a pipeline spill that dumped more than 50,000 gallons of oil into the Yellowstone River, to find out why the industry has such weak regulatory oversight.
Agribusiness Monsanto Co., whose popular weed killer Roundup has been partly blamed by critics for knocking out monarch butterflies' habitat, said Tuesday it is committing $4 million to efforts to stem the worrisome decline of the black-and-orange insects.
The agreement sets deadlines for Freedom to submit cleanup reports and work plans to the DEP.
President Obama previously nominated Vanessa Sutherland, chief counsel for the Transportation Department's Pipeline and Hazardous Materials Safety Administration, to succeed Moure-Eraso. That transition, however, will move up by three months following a slew of controversies under Moure-Eraso's watch.
CSX also agreed to complete restoration of the river bank in the area of the derailment and monitor the river for any long-term environmental impacts from the incident.
The United States pledged to cut its greenhouse gas emissions up to 28 percent as part of a global treaty aimed at preventing the worst effects of climate change.