Denis Hayes was a 25-year-old graduate student at Harvard University when he read about a Wisconsin Senator, Gaylord Nelson, who was planning to organize an environmental teach-in on college campuses. Hayes hightailed it to Washington, D.C., hoping to convince Nelson to let him organize a teach-in at Harvard, and maybe other colleges in and around … Continue reading Q&A: Denis Hayes, Planner of the First Earth Day, Discusses the ‘Virtual’ 50th