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A zero-carbon economy based on clean renewable energy could avert hundreds of thousands of premature deaths caused annually by air pollutants from the burning of fossil fuels. That’s the conclusion of a report released last month by the European Academies’ Science Advisory Council (EASAC); see go.nature.com/2jqzxid. Many of EASAC’s recommendations are relevant worldwide. They include making better use of scientific evidence, filling knowledge gaps and tackling misinformation.