Five days after tornadoes first touched down in the Midwest and South of the U.S., survivors are coming to grips with what they have lost. Of the several states that the storms tore through last weekend, Kentucky was the hardest hit. At least 74 people have been confirmed dead there. Many more are unaccounted for.As survivors, volunteers, and officials sort through and pick up what's left, how might they think about shoring up homes, businesses and buildings for the future? NPR's Audie Cornish speaks with University of Florida civil engineering professor David Prevatt about how to prepare buildings for tornadoes and hurricanes. The severity and timing of these storms have also raised the question of whether climate change has anything to do with tornadoes. NPR correspondent Dan Charles reports.In participating regions, you'll also hear a local news segment that will help you make sense of what's going on in your community.Email us at considerthis@npr.org.