"Energy firms taking part in a North Sea boom for offshore wind farms will have to watch out for remains of Stone Age villages submerged for thousands of years, an expert said on Tuesday."

"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."

"You drive a hybrid, eat organic, and are passionate about recycling. But how green is your love life?" Author Stefanie Iris Weiss explores the question in her forthcoming book, "Eco-Sex."

"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."

Bisphenol A, an estrogen-mimicking building block of polycarbonate  plastics and food-can coatings, is being found in beach sand and coastal seawater around the world. A Japanese chemist reported the findings, and he suspects the source may be certain resins used in marine paint.

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.

"With climate change transforming the Arctic, biologists are scrambling to understand the impact on gray whales and other creatures living in the region."

"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."

Delegates at a meeting in Doha, Qatar, of the parties to the Convention on International Trade in Endangered Species (CITES) neared the March 25 close of the 13-day meeting. They rejected proposals to regulate trade in three shark species, but accepted regulation of a fourth shark species. They held off sales of stockpiled elephant ivory for another three years. They rejected  ban on trade in Atlantic bluefin tuna and polar bears.