NextGen America was started by the environmentalist of what nationality?
Tom Steyer Thomas Fahr Steyer (born June 27, 1957) is an American hedge fund manager, philanthropist, environmentalist, liberal activist, and fundraiser.
David George Campbell David George Campbell (born January 28, 1949 in Decatur, Illinois, United States) is an American educator, ecologist, environmentalist, and award-winning author of non-fiction.