Tom Furman is an amazing activist, having conceived and begun to whip up support for this original idea:
Live Aid helped battle an African famine. And Farm Aid helps America's family farmers annually. Now comes Great Lakes Aid — a planned series of concerts in U.S. and Canadian cities to raise money for environmental projects that will benefit the Great Lakes.
http://www.usatoday.com/news/nation/2005-02-06-lakes-music_x.htm?csp=34