The term "soun science" has been used in public policy discussions, usually in contrast to "junk science". Typically an advocate will use sound science to describe his side and junk science to describe his opponent's side. These terms have been promoted by Steven Milloy and the Advancement of Sound Science Center. According to epidemiologist David Michaels, Assistant Secretary of Energy for Environment, Safety, and Health in the Clinton Administration, the tobacco industry invented the sound science movement in the 1980s as part of their campaign against the regulation of secondhand smoke.