5 to 2.4 billion tons of carbon, rivaling the quantity of carbon in terrestrial grasses, plants and trees. Phytoplankton alone are estimated to hold between. Twenty-five percent of all carbon emissions have been absorbed by the ocean and 93 percent of human-caused atmospheric heating. The reason is that the global ocean is the largest carbon sink on the planet. But Hawken devotes considerable attention to protecting and restoring ocean ecosystems in Regeneration. When we think of countering climate change, we often think of electric vehicles and wind turbines. Hawken is the founder of Project Drawdown, which assiduously documents the top 100 climate solutions that could not only limit carbon emissions but “drawdown” carbon from the atmosphere, a path towards reversing global warming. As the UN Climate Change Conference in Glasgow (COP26) convenes this November, Paul Hawken’s new book Regeneration: Ending the Climate Crisis in One Generation provides a breath of fresh air, not just for the solutions it champions, but for Hawken’s insights into the mindset necessary for sustained action.
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