Author Paul Hawken shares the remarkable story of how a diverse group of researchers from around the world came together to identify, research, and model the most substantive 100 existing solutions to bring us to drawdown — that moment when greenhouse gas levels peak and begin to drop on a year-to-year basis. He shows the path forward that can roll back global warming within 30 years. The uplifting idea here: Humanity has the means at hand right now to stem global warming.