Bacteria have been engineered to live off carbon dioxide in the air. As well as pulling the greenhouse gas from the air they could be used to make food and fuel
Source:
https://www.newscientist.com/article/2224908-co2-guzzling-bacteria-made-in-the-lab-could-help-tackle-climate-change/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home