top | item 17381820 Machines that suck CO₂ from the air might be cheaper than we thought 2 points| gustaf | 7 years ago |arstechnica.com 2 comments order hn newest [+] [-] f_allwein|7 years ago|reply How do these machines compare to trees? I understand those are good at removing CO2 from the atmosphere as well. [+] [-] gustaf|7 years ago|reply This one is removing CO2 from the atmosphere
[+] [-] f_allwein|7 years ago|reply How do these machines compare to trees? I understand those are good at removing CO2 from the atmosphere as well. [+] [-] gustaf|7 years ago|reply This one is removing CO2 from the atmosphere
[+] [-] f_allwein|7 years ago|reply
[+] [-] gustaf|7 years ago|reply