The Environmental Protection Agency this week starts regulating greenhouse gases from power plants and other big polluters for the first time.The rules only apply to new construction and major expansions, but they've become hugely controversial.
Scientists have been diving in the Gulf of Mexico on a miniature submarine to see how the ecosystems there are coping with the BP oil spill. The expedition gradually edged toward ground zero -- the BP wellhead.Looking for robust sea life in the Gulf isn't as odd as it may seem.
The recent announcement that the Chicago Climate Exchange will soon cease its carbon trading system saddened some environmentalists. At one point, members did a fair bit of business, voluntarily buying and selling carbon emissions, metric tons of CO2, as commodities.