Spraying the Skies: an Untested Stopgap for Climate Change

Late in July, an off-the-record gathering of experts and academics converged on the Grand Summit Hotel in Newry, Maine to talk climate change. The handpicked coterie of conference-goers did not discuss carbon emissions or unveil next-generation renewable energy tech. Instead, the topic at hand was climate engineering: a sci-fi-sounding, catch-all term that refers to deliberate manipulation of the climate system. Thus far in 2017, a carbon juggernaut walked out of the Paris deal, other countries are struggling to meet their reduction pledges, temperatures continue to climb, and the consequences are mounting. Despite sweeping rhetoric, lofty goals, and multilateral treaties,...

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