For every dollar the government spends to make existing buildings more resistant to Å·ÃÀ¿Ú±¬ÊÓƵ, earthquakes, floods and hurricanes, $6 is saved in property losses, business interruption and health problems, according to a new study led by Å·ÃÀ¿Ú±¬ÊÓƵ Boulder Professor Keith Porter.