. "Denis Allen Hayes"@en . "American environmentalist" . "1944Z"^^ . . . . "Denis Allen Hayes (born August 29, 1944) is an environmental activist and proponent of solar power. He rose to prominence in 1970 as the coordinator for the first Earth Day.Hayes founded the Earth Day Network and expanded it to more than 180 nations. During the Carter Administration, Hayes became head of the Solar Energy Research Institute (now known as the National Renewable Energy Laboratory), but left this position when the Reagan Administration cut funding for the program."@en . . "Denis Hayes"@en . . . "1944-08-29Z"^^ . . . "Hayes, Denis"@en .