Hot, Flat, and Crowded: Why We Need a Green Revolution—And How It Can Renew America is a book by New York Times Foreign Affairs columnist Thomas Friedman, proposing that the solutions to global warming and the best method to regain the United States' economic and political stature in the world are to embrace the clean energy and green technology industries. The title derives from the convergence of Hot, Flat and Crowded.

Thomas Loren Friedman is an American political commentator and author. He is a three-time Pulitzer Prize winner who is a weekly columnist for The New York Times. He has written extensively on foreign affairs, global trade, the Middle East, globalization, and environmental issues.