Yvo de Boer, the United Nations' top climate official, has announced that he will step down later this year, further dampening hopes that the recent climate talks in Copenhagen will lead to an effective global accord.
Louisiana's environmental regulator has asked to become a plaintiff in the U.S. government's suit accusing an NRG Energy Inc. subsidiary of operating a coal-fired power plant that runs afoul of pollution controls mandated by the Clean Air Act.
The House Energy and Commerce Committee has opened an investigation into whether the oil and natural gas extraction process known as hydraulic fracturing may lead to environmental and public health problems.
The U.S. Environmental Protection Agency on Thursday announced new emissions standards for stationary diesel engines, such as those that power industrial and agricultural generators, imposing measures to reduce polluting chemicals including formaldehyde, benzene and acrolein.
General Electric Co. has agreed to pay the U.S. Environmental Protection Agency $300,000 to end a dispute over cleanup cost reimbursements at a Superfund site in Albuquerque where GE owns an aircraft engine plant.
California's Kern County Water Agency and an ad hoc group of water users have settled a dispute with Mirant Delta LLC and the U.S. Army Corps of Engineers alleging that the energy company’s operation of two California power plants has harmed endangered fish.
Several Southern California conservation groups have sued the U.S. Department of the Interior and two of its agencies, claiming they violated the National Environmental Policy Act when they approved a massive power line project that could imperil endangered species.
Teck Resources Ltd. may be forced to curtail operations at one of the world's largest zinc mines in Alaska, as conservation groups and local residents appeal the legality of the mine's permit, due to come into effect March 1.
The South Dakota Legislature has passed a resolution officially opposing cap-and-trade climate change measures being considered on Capitol Hill, saying the bills would hurt agriculture, manufacturing and small business in the state.
Southern Union Co. has kick-started its appeal of a recent judgment ordering the natural gas provider to pay $18 million for illegally storing liquid mercury at a facility in Rhode Island, arguing that the penalty is excessive.
Oil and gas heavyweights ConocoPhillips and BP America, along with heavy-equipment giant Caterpillar Inc., have announced that they're leaving the U.S. Climate Action Partnership, reportedly to focus lobbying efforts on their own industry sectors.
The U.S. steel industry has fired off a lawsuit challenging the U.S. Environmental Protection Agency's plan to start regulating greenhouse gases, saying such a unilateral approach will put U.S. steelmakers at a disadvantage compared with their competitors elsewhere.
Landlords have traditionally been reluctant to perform energy-efficiency retrofits on buildings because most of the cost savings go to tenants, but environmental advocates and lawyers are finding ways to resolve this so-called split incentive through the green leasing movement.
Several Lloyd's of London underwriters have hit back at Canadian mining company Teck Metals Ltd.'s new breach of contract claim in an insurance coverage dispute stemming from the contamination of a Washington lake, arguing that their policies contain no duty to defend and that the claim is not ripe.
The Tennessee Valley Authority has asked a judge to toss an inverse condemnation claim brought by one of 21 plaintiffs who are jointly seeking damages from a December 2008 retention pond burst that unleashed an avalanche of coal-ash sludge.
Texas state officials have partnered up with a coalition of global warming skeptics in launching a legal challenge to the U.S. Environmental Protection Agency's finding that greenhouse gases pose a threat to human health, arguing that the agency relied on “fundamentally flawed and legally unsupported methodology” in reaching its decision.
A nonprofit environmental group has accused the Boston Water and Sewer Commission of letting stormwater runoff pollute the city's lakes and rivers in violation of the Clean Water Act.
Tesoro Corp. and two of its subsidiaries have been hit with a Clean Air Act lawsuit alleging that they improperly tested their gasoline for aromatics, olefins and other properties at refineries spread throughout the Western United States.
A federal appeals court has granted Bayer CropScience LP a reprieve in its battle to keep its pesticide spirotetramat on the market, temporarily staying a lower court's order vacating the U.S. Environmental Protection Agency's registration of the chemical.
Southern California Edison Co. has paid $2.8 million to settle claims that its power transmission line started the 2002 Birch Forest Fire, which destroyed more than 2,600 acres of the Inyo National Forest.