A Russian company is building the world's first floating nuclear plant.

"The Treasury and the Energy Department today unveiled long-awaited new rules under which the government will pay up to 30 percent of the cost of renewable energy projects."

The two-degree pledge on climate change made by the G8 is nonbinding, hard to translate to a specific level of greenhouse gases in the atmosphere ... and perhaps wishful thinking.

"A federal appeals court yesterday upheld nearly all U.S. EPA designations of areas where airborne soot concentrations exceed national standards, rejecting challenges from state and local governments and industry groups."

"A coalition of environmental groups is suing federal agencies in an effort to change the location of corridors to transmit energy across Western lands."

"After one of the longest sunspot droughts in modern times, solar activity picked up quickly over the weekend."

"The world's leading industrial nations tentatively agreed Wednesday to try to prevent global temperatures from rising above a fixed level, after a more far-reaching proposal to slash production of greenhouse gases fizzled... ."

"Pollution from burning wood in stoves, fireplaces and elsewhere is the top cancer risk in Oregon's air, according to a U.S. Environmental Protection Agency analysis."

"Hydrofluorocarbons ... are ... many thousands of times more potent than CO2 as climate warming agents, and scientists say their spread could become as much as 50 percent of the global greenhouse gas problem by 2050. Yet the public is barely aware of the issue, and as the White House works to hammer out its policy, it seems to want to keep it that way."

The Government Accountability Office, testifying before a Congressional committee, urged the Food and Drug Administration to stiffen oversight of bottled water and give consumers more information about what they are drinking.

"Greenpeace activists were arrested Wednesday for scaling Mount Rushmore and hanging a banner next to the carved face of Abraham Lincoln urging President Barack Obama to get tough on climate change."

"Climate change could push dengue fever into all corners of the United States, as the mosquitoes that can carry the traditionally tropical virus survive warmer U.S. winters .... scientists at the Natural Resources Defense Council said in a report."

"The Pennsylvania Department of Environmental Protection is working to regulate salt discharges that result from natural-gas drilling."

The green tech that many clamor for requires some very exotic mineral ingredients -- and mining them has environmental consequences.

T. Boone Pickens postponed a plan to create the world's largest wind farm in Texas. The billionaire had spent $60 million advertising his plan to combat what he calls the United States' addiction to foreign oil.