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.
Diane Meyer Simon Diane Meyer Simon (born Diane Irene Meyer) is an environmental activist, founder and leader of Global Green USA, member of the Green Cross International's (GCI) Honorary Board, and politician. She is the former wife of Indiana real estate billionaire Herbert Simon.