May 28, 2013
The planet's most powerful storms — tornadoes — pummel the central United States every spring and summer. Yet schools that lie in their paths rarely have hardened shelters designed to withstand the kind of force that tore through Moore, Okla., last week, killing seven elementary school students.
“There may be other surprises out there, but you're essentially unique,” said Ernst Kiesling of the National Wind Institute at Texas Tech University. Kiesling also is executive director of the National Storm Shelter Association.