Denis Hayes

Denis Hayes, the chairman of Earth Day 1990, a one day world-wide demonstration calling attention to the planet's environmental problems. Hayes organized the first Earth Day back in 1970. That event is credited with launching the environmental movement in the U.S. Since that first Earth Day, Hayes founded Environmental Action, was a senior fellow at the Worldwatch Institute, and did extensive work on solar energy. More recently, he's been a visiting professor at Stanford University. Earth Day 1990 is scheduled for April 22, 1990, 20 years to the day after the first Earth Day.