 Gordon J. F. MacDonald

Gordon James Fraser MacDonald (July 30, 1929 – May 14, 2002) was an American geophysicist and environmental scientist, best known for his principled skepticism regarding continental drift (now called plate tectonics), involvement in the development of the McNamara Line electronic defense barrier during the Vietnam War, and early research and advocacy on manmade global climate change.MacDonald was admired for his creative mind, and his ability to connect scientific issues and matters of public policy.