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Klaus Lackner, director of Arizona State University's Center for Negative Carbon Emissions, developed the "mechanical tree" technology being commercialized by Silicon Kingdom.
Fantasy or nightmare? If you look beyond extreme ideas such as space shades, there's much to like about this fast-evolving category of climate tech
How far should humans go to save Planet Earth? That was my first question in early March, when a new book about geoengineering, Hacking Planet Earth, authored by journalist Thomas Kostigen, landed on...
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