Machines using giant fans and filters can literally suck carbon dioxide out of the air. Sounds great – but the technology faces many challenges.
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Articles on Direct air capture
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Carbon Engineering's clever harnessing of high-school chemistry is just a small step on the path to negative emissions.
The UN's panel on climate change said that technologies to remove CO2 will be necessary to limit global temperature rise to only 1.5 degrees Celsius. But these techniques are largely unproven.
