Can snow keep you warm? Morgan, Rio and Thianna of Aspen, Colorado, explore the mysteries of insulation by building an igloo-like shelter called a quinzhee. * Kids from the Crow Nation in Montana use science to show that their straw house can handle anything the Big Sky can dish out. * There's nothing shaky about engineer Jose Rostrepo, who designs earthquake-resistant buildings. * And DragonflyTV asks: how do you climb a building without ropes?