The Environmental Protection Agency began to prepare for its upcoming study on the effects of hydraulic fracturing on drinking water by sending letters to hydraulic fracturing service providers that requested the list of chemicals used in the natural gas extracting process.
Greenpeace has warned of "surprisingly high" levels of arsenic and mercury in the red sludge that burst out of a metals plant reservoir in Hungary, killing six people and devastating the surrounding area.
A federal grand jury in Honolulu has indicted six labor contractors from a Los Angeles manpower company on charges that they imposed forced labor on some 400 Thai farm workers, in what justice officials called the biggest human-trafficking case ever brought by federal authorities.
The donation to the Proposition 23 campaign comes from a subsidiary of Kansas-based Koch Industries, which owns refineries and controls 4,000 miles of oil pipelines.
Congo intends to launch a probe into financial misconduct at First Quantum Minerals Ltd.'s (FM.T) operations in the country shortly after the miner suspended operations at the Frontier mine.