National (U.S.)

"The alcohol in silage can drive significant ozone formation, exceeding the contribution from tailpipe emissions."

"Metro communities from White Bear Lake and Maplewood to South St. Paul are discovering that their storm-water ponds are chemical soups of pesticides, fertilizers, pet wastes, oil, grease and other contaminants."

"Prospects for the Senate climate bill grew even dimmer yesterday after the trio working on a comprehensive measure emerged from a closed-door meeting headed in separate directions -- both literally and figuratively."

"The food industry and major business groups, including the U.S. Chamber of Commerce, are threatening to withdraw support for a long-pending bill to improve food safety, saying they are upset by a proposed amendment that would ban bisphenol-A, a controversial chemical, from food and beverage containers."

"Political pressure continues to build on Interior Secretary Ken Salazar  as he prepares to announce his decision this week on the fate of a proposed wind farm off the coast of Cape Cod, Mass., that has been stalled for nine years."

"The U.S. Supreme Court is considering genetically engineered crops for the first time, in a case that has divided conventional and organic farmers."

"Tens of thousands of people gathered Sunday on the National Mall in Washington to observe the 40th anniversary of Earth Day and to urge Congress to pass climate and energy legislation."

"In a move that may derail a comprehensive climate change and energy bill in the Senate, one of the measure’s central architects, Senator Lindsey Graham, has issued an angry protest over what he says are Democratic plans to give priority to a debate over immigration  policy."

"A tough new proposal to regulate U.S. markets calls for top regulators and government officials to conduct a study on transparency in emerging U.S. carbon markets as part of the financial reform package."