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Tornado Outbreaks Leave Science Questions Unsettled

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?

Source: LA Times, 05/25/2011

Risk From Spent Nuclear Fuel Is Greater in U.S. Than in Japan: Study

"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."

Source: NY Times, 05/25/2011

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