"BILLINGS, Mont. -- Environmentalists filed notice Wednesday that they plan to sue the six companies that co-own eastern Montana's Colstrip power plant over alleged pollution violations."

"HARRISBURG, Pa. -- A Pennsylvania appellate court panel yesterday struck down provisions in a new law regulating the state's booming natural gas industry that opponents said would leave municipalities defenseless to protect homeowners, parks and schools from being surrounded by drilling sites or waste pits."

"The Environmental Protection Agency on Wednesday approved a first-of-its-kind program to cut phosphorus levels in Wisconsin's lakes, rivers and streams."

"State and federal leaders on Wednesday reaffirmed their commitment to build a giant pair of tunnels to divert the Sacramento River out of the Delta."

"A dramatic gash in the surface of the Earth that could rival the majesty of the Grand Canyon has been discovered secreted beneath Antarctica's vast, featureless ice sheet."

"Retail food prices are predicted to rise as soon as this fall due to the high temperatures, low rainfall and 70-year record drought across the Midwest that have boosted commodity prices for corn, soybeans and other field crops, the U.S. Department of Agriculture said today."

"Radioactive strontium-90 from the crippled Fukushima No. 1 nuclear power plant has been detected for the first time in 10 prefectures outside Miyagi and Fukushima, the science ministry said July 24."

"A settlement reached between environmentalists, the state's pollution regulators and the state's largest steel mill raises questions about the agency's actions -- and invites scrutiny of its leader."

"Secret files reveal the German maker of thalidomide ignored and covered up repeated warnings that its drug could damage unborn babies."