Researchers have developed a reactor that pulls carbon dioxide directly from the air and converts it into sustainable fuel, using sunlight as the power source

[u/Wagamaga]

https://www.cam.ac.uk/research/news/solar-powered-device-captures-carbon-dioxide-from-air-to-make-sustainable-fuel

[u/noggin-scratcher]

I would expect that "heat island" effect to be because of the materials used in city construction absorbing/retaining more heat, rather than because of any difference in local CO2 concentration.

[u/beigechrist → u/noggin-scratcher]

It is. I’m just thinking aloud about any smaller effect by the device. Cheers