In the state of Pennsylvania's gas drilling boom, newer and unconventional wells leak far more often than older and traditional ones, according to a study of state inspection reports for 41,000 wells.
US President Barack Obama mocked Republicans who reject global warming as a "liberal plot," as he pumped up a crowd of environmental activists in Washington.
Human Rights Watch called Wednesday on the Democratic Republic of Congo to investigate attacks and threats against opponents of a major oil exploration project at one of Africa's oldest national parks.
Serbian police said Wednesday they are investigating an attack on an independent website, as the Balkan country's new government sought to dispel allegations that it was trying to curb online and media freedoms.
A whaling fleet anchored at a Japanese port Saturday after Tokyo said it would cancel its annual hunt for the first time in more than 25 years to abide by a UN court ruling.
A popular Chinese instant messaging service has removed at least 40 accounts with content about political, economic and legal issues in a possible sign communist authorities are tightening control over discussion of sensitive ...
Greenpeace activists broke into the grounds of nuclear plants in six European countries Wednesday, urging governments to close down ageing reactors on safety grounds.
U.S. Secretary of State John Kerry said Saturday he urged Chinese leaders to support Internet freedom and promised to look into whether American companies help Beijing curb access to online material.
Coal took center stage in the global warming debate on Monday as a high-profile coal industry event kicked off on the sidelines of a U.N. climate conference in Warsaw.
The snakehead is an invasive species of fish from Asia that is threatening the delicate ecosystem of the Potomac River that flows through Washington into the Atlantic Ocean.