Air pollution is worsened in Chicago by the Fisk coal-burning power plant built in 1903. It is grandfathered against Clean Air Act requirements for modern pollution controls. Will EPA cave in to Republican pressure to let its pollution keep harming health of Chicagoans?

"Beneath the lush, green hills of eastern Utah's Uinta Basin, where elk, bear and bison outnumber people, the soil is saturated with a sticky tar that may soon provide a new domestic source of petroleum for the United States. It would be a first-of-its kind project in the country that some fear could be a slippery slope toward widespread wilderness destruction."

"U.S. EPA's long-awaited study of formaldehyde's toxicity got panned today by a National Academy of Sciences' panel that sharply disagreed with the agency's conclusions and declared the effort in need of 'substantial revision.'"

"Three gas pipelines have exploded in an Iranain province south of the capital Tehran, a news agency reported Friday, saying the cause was unknown and giving no details of damage or casualties."

"Critics say it's a chemical that could cause infertility or cancer, while others see it speeding the growth of super weeds and causing worrying changes to plants and soil. Backers say it is safe and has made a big contribution to food production."

"Rich and poor nations overcame deep divisions on Friday to cut a deal that maps out U.N. climate negotiations for 2011, building on last December's agreement in Mexico and hardening the focus on tougher issues."

"Japan's unfolding reactor crisis is fueling a battle over nuclear power across the Pacific, in earthquake-prone California."

"An internal review of the Coast Guard’s performance during the BP oil spill cleanup last year has concluded that the agency was caught badly unprepared and that the response operation was dogged from the beginning by significant planning failures."