Minnesota is already a national leader in alternative energy, thanks to the state's abundant wind power and support for corn-based ethanol. Officials also think the state can be a player when it comes to hydrogen fuel cells. The potentially pollution-free power source is being touted for cars, laptop computers, and homes. Yesterday (MONDAY) Governor Pawlenty ceremonially flipped on one of the state's first industrial fuel cell generators. Minnesota Public Radio's Jeff Horwich reports.