“A team of researchers from Germany and Canada have proposed a radical environmental concept: retrofitting old air conditioning units so that they suck in excess carbon dioxide and turn it into renewable fuel — a concept they term “crowd oil.”
In the journal Nature Communications, they argued that the tech would allow “people to take control and collectively manage global warming and climate change, rather than depending on the fossil power industrial behemoths.”…”
Source:
https://futurism.com/the-byte/air-conditioners-carbon-dioxide-fuel