I also liked that the sections for nuclear power and biofuels called these “regrets solutions,” which we may have to use temporarily but in contrast with most of the solutions in the book, these have a major downside the authors recognized. I’m not the kind that thinks “love” is a solution! Please understand that I am a cynical old pessimist, so this means they did a fine job on the vision and inspiration aspect. I’m going to name three things I liked in this book, and one I disliked.įirst, the inspirational bits, especially in the essays not devoted to a ranked scheme, were truly inspiring to me. Anyway, I don’t think the numbers are the important part of this effort. For example, take a truck bringing corn to an ethanol plant-is that in the transportation sector, the agriculture sector, or the energy production sector? But the authors claim they “made sure to avoid” double counting perhaps I misunderstood the differences between some of these things. A problem with any assessment of climate change is assigning categories and avoiding overlap. For example, it seemed to me that farmland restoration, regenerative agriculture, multistrata agroforestry, silvopasture, tree intercropping, managed grazing, pasture cropping, and intensive silvopasture are not really eight different schemes, but three. The other issue with numbers is the question of double counting, of overlap. I can only think that people doing the bike chapter were much less optimistic than those coming up with numbers for the green roof piece. That totals to 90 percent as the two are different approaches with no overlap. But green roofs and cool roofs (that is, roofs with turf on top and roofs with reflective metal that sends solar radiation back) are estimated to grow to 30 and 60 percent, respectively. One of the things I found surprising was the estimates in a few cases of the potential of solutions-in particular, a back-to-back pair: using bicycles instead of motor vehicles in cities was estimated to increase from 5.5 percent of trips in 2014 to 7.5 percent by 2050. These numbers are speculative, of course. The book has a few essays but is primarily composed of descriptions of these possible solutions each comes with estimates of its potential impact on climate, and a ranking (and a picture, naturally). It’s not so much a cohesive plan as a list of partial solutions: 80 that are tested and in use at least somewhere in the world, and another 20 that are speculative.
note: This post will also be cross-posted to the Ohio Valley Environmental Coalition blog.ĭrawdown was a major collaborative effort involving 70 research fellows from 40 countries.
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