"Scientific studies are turning up answers to a baffling mystery about the Great Salt Lake. The new findings help explain why concentrations of toxic mercury in the lake are higher than anywhere else in the country. The new studies suggest it's not so much our local pollution that's at fault -- it appears to be mainly the world's pollution."

"The Florida Fish and Wildlife Conservation Commission says 431 manatee carcasses have been documented in state waters so far this year. The agency on Tuesday said this preliminary data shows manatee deaths has exceeded the highest number on record for an entire calendar year."

A coalition of British Columbia First Nations, plus business and environmental groups, are opposing the proposed Enbridge Inc. pipeline that would bring oil from the Alberta tar sands to the B.C. coast. They say the risk of a spill is too great.

"After his governing conservative party took a pounding in regional polls on Sunday, President Nicolas Sarkozy of France has dropped a key environmental goal: setting up a carbon tax to limit the growth of emissions and spur the development of renewable fuels."