To his credit, Paul Hawken drew attention to this fact in talks on the project, particularly in his appearance on Damon Gameau’s uplifting climate-solutions movie ‘ 2040’. And they do go together, since they represent the emissions saved by reducing global population growth from the UN’s ‘medium fertility’ projection to its ‘low fertility’ projection. Less obvious was that, when taken together, these two constituted the greatest single contribution of all, at 119 Gt. Listed at numbers 6 and 7 were ‘Educating Girls’ and ‘Family Planning’, each attributed 59.6 Gt CO 2-eq. It stripped away the complexity of how to respond to climate change, by cataloguing the hundred most impactful actions that could be taken, using existing technologies, to reduce greenhouse gas emissions. Three years ago, he published a best-selling book, ‘ Drawdown: the most comprehensive plan ever proposed to reverse global warming’. Hats off to Paul Hawken, the environmentalist behind Project Drawdown.
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