By Travis Walton and Udi Maor Physicist Art Rosenfeld was working late at Lawrence Berkeley National Lab one night in 1973 when he noticed it. Despite an ongoing energy crisis, his colleagues routinely left their lights on after they left. Waste was one of the largest consumers of power in the state, he soon discovered: pilot lights consumed 10% of gas in homes. Switching from physics to politics, he lead the charge to pass laws mandating efficiency standards for buildings and appliances.
