Due in part to their high cost as well as to a building code that doesn't require them, public and private tornado shelters are in short supply in Moore, Okla. A report by The New York Times finding that only one in 10 homes in the city were equipped with one is now raising questions as to whether this week's storm would have resulted in fewer fatalities had more reinforced, underground shelters been in place. Builder magazine looks at different kinds of in-home shelters and talks with industry experts about what the storm's fallout could mean for local builders and code officials. Read the story here.