Machines that suck CO₂ from the air might be cheaper than we thought (arstechnica.com) 2 points by gustaf 8y ago ↗ HN
[–] f_allwein 8y ago ↗ How do these machines compare to trees? I understand those are good at removing CO2 from the atmosphere as well. [–] gustaf 8y ago ↗ This one is removing CO2 from the atmosphere
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