Two unoccupied, clifftop homes collapsed and slid off their foundations Saturday in Draper, Utah, about 20 miles south of Salt Lake City, authorities said. Police officers and firefighters documented the dramatic scene, showing the moment the unstable homes began to suddenly break apart and deteriorate downhill. Luckily, no one was injured when the homes collapsed, as residents were urged to evacuate in October due to dangerous conditions posed by “earth shifting” that resulted in sliding and br