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