Can a helmet protect you in a tornado?
The Centers for Disease Control and Prevention says there's no research on how effective helmets are in preventing head injuries during tornadoes.
But, in what looks like a first, the agency says, in effect, that it's not out of the question that they might help.
Last year, tornadoes claimed the lives of more than 500 people in the U.S. Some safety advocates say protecting your head with a sturdy helmet could help reduce injuries and deaths.
