Experts and elected officials on energy efficiency as a means to combat climate change

Washington Post deputy editor Juliet Eilperin speaks with Donnel Baird, CEO of BlocPower, Jason F. McLennan, CEO of McLennan Design, and Lauren Faber O’Connor, chief sustainability officer for the Office of Los Angeles Mayor Eric Garcetti, about energy efficiency as a means to combat climate change, clean the air we breathe and reduce energy costs.