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These machines scrub greenhouse gases from the air – an inventor of direct air capture technology shows how it works

  • Written by Klaus Lackner, Professor of Engineering and Director of the Center for Negative Carbon Emissions, Arizona State University
These machines scrub greenhouse gases from the air – an inventor of direct air capture technology shows how it worksOne 'mechanical tree' is about 1,000 times faster at removing carbon dioxide from air than a natural tree. The first is to start operating in Arizona in 2022.Illustration via Arizona State University

Two centuries of burning fossil fuels has put more carbon dioxide, a powerful greenhouse gas, into the atmosphere than nature can remove. As that CO2...

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