Rubi has developed an enzymatic process to turn carbon dioxide into cellulose that’s ready to be spun into lyocell or viscose.
Archived version: https://archive.is/newest/https://techcrunch.com/2026/03/17/hm-wants-to-make-clothing-from-co2-using-this-startups-tech/
Or, you could just grow Hemp.
What?? You mean converting co2 and nitrogen plus sun into cellulose? Preposterous.