But given how slowly we’re reducing emissions, there aren’t any good options left. Zurich-based Climeworks’s direct air capture plant in Italy will produce methane from captured carbon dioxide and hydrogen, while a second plant in Switzerland will promote carbon dioxide to the soft-drinks trade. So will Global Thermostat of New York, which completed constructing its first commercial plant in Alabama final year. In a shock discovering final summer time, Harvard local weather scientist David Keith calculated that machines may, in principle, pull this off for less than $100 a ton, through an approach known as direct air seize.
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