"The annual G8 Summit concluded this afternoon with agreement among leaders of the world's largest industrial democracies to strengthen nuclear security in view of Japan's ongoing nuclear power plant crisis."

"Nuclear fuel at the stricken Fukushima Daiichi power plant began melting just five hours after Japan’s March 11 earthquake, a Japanese nuclear engineer told a panel of U.S. scientists Thursday."

"In the first substantive hearing of the consolidated litigation over last year's Gulf of Mexico oil disaster, corporate defendants told U.S. District Court Judge Carl Barbier Thursday that claims for economic damage, claims by first responders who got sick from cleaning up the oil, and suits by environmental advocacy groups should be dismissed."

"This week, May 22 through 28, is national Hurricane Preparedness Week and NOAA's Climate Prediction Center, a division of the National Weather Service, is forecasting an above-normal hurricane season this year for the Atlantic basin."

Most observers agree that this spring's spate of killer tornadoes is highly unusual by statistical and historical standards. After that, the disagreement starts. Is it a fluke? -- or a sign of La Nina or climate change? Why haven't better warnings helped?

"The threat of a catastrophic release of radioactive materials from a spent fuel pool at Japan’s Fukushima Daiichi plant is dwarfed by the risk posed by such pools in the United States, which are typically filled with far more radioactive material, according to a study released on Tuesday by a nonprofit institute."

"A series of storms struck Oklahoma, Kansas and Arkansas late Tuesday and early Wednesday, wiping out homes and businesses and killing at least nine people, emergency officials said."

"In a setback for the only model of nuclear reactor for which ground has been broken in the United States, government regulators have found additional problems with the design of its shield building, a crucial component, the chairman of the Nuclear Regulatory Commission said on Friday."

"The operator of the nuclear power plant at the center of a radiation scare after being disabled by Japan's earthquake and tsunami confirmed Tuesday that there had been meltdowns of fuel rods at three of its reactors."