Organizers of a new website about Gaylord Nelson and the first Earth Day report itâ??s getting tens of thousands of hits per day. http://nelsonearthday.net is run by the Nelson Institute for Environmental Studies at the UW-Madison. The site includes film, audio, photographs and other items about former Wisconsin senator and Earth Day founder Gaylord Nelson, including a 1970 clip of him speaking about the growing interest in environmental issues in Milwaukee