One of the most important thought leaders, activists and entrepreneurs of our era (as founder of Erewhon Trading Company and Smith & Hawken garden stores), Paul Hawken illuminates his groundbreaking new Project Drawdown. It’s the first systematic attempt to do the math on the most effective climate solutions and technologies that already exist, and the impact they would have if they scaled in a rigorous manner over the next 30 years. This coalition of NGOs, academics, scholars, scientists, businesses and government agencies has come together to measure the impact of 100 substantive solutions to mitigating carbon emissions to determine if, when and how we can achieve a year-to-year drawdown in the concentration of CO2 in the atmosphere. The news is good.