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Hurricane Wilma battered Florida with heavy rain, widespread flooding and damaging winds for about six hours Monday before heading out to the Atlantic and regaining strength.

As Earth's magnetic field weathered a strong solar shock wave on Wednesday, the sun unleashed another powerful flare that could trigger more geomagnetic storms on Thursday.

Scientists using nanotechnology have devised a way of delivering cancer drugs that could make them up to 10 times more effective in combating the killer disease.