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9/1: Powerful winds, damaging hail sweep through Midwest; Thanks to research, ALS less of a mystery

| Meteorologist Megan Glaros has the latest on the wind, hail, heavy rain and localized flooding in the Midwest, saying more could be on the way;and, Dr. Jon LaPook looks into the state of ALS research amid the flood of donations to fight Lou Gehrig's Disease.