Architecture Puzzler #331

It is hard to determine exact numbers, but it has been estimated that commercial and residential buildings consume about 65 percent of all electricity used in the United States and about 40 percent of all raw materials. These buildings account for about what percentage of greenhouse gases?

"Whatever a man does, that is who he is." These words were posted on a sign over the home of which famous architect: Frank Lloyd Wright, Andrea Palladio, Thomas Jefferson, or Ludwig Mies Van de Rohe?