We don’t often hear this concern anymore, thanks to tremendous success tackling malaria directly with insecticide-treated bed nets, indoor spraying, and treatment, which has halved the number of deaths over the last fifteen years. Imagine if we hadn’t focused on these simple approaches, but instead put all our efforts into cutting carbon dioxide. We would still have 840,000 annual deaths, 400,000 more than today, while we waited for the miniscule effects of moderate carbon cuts to have any impact.