US air carrier United Airlines announced an investment in domestic carbon transformation company Twelve as the latter moves closer to launching <a href="https://renewablesnow.com/news/interview-twelve-to-produce-50-000-gallons-of-saf-annually-at-pilot-plant-ceo-says-870253/" target="_blank">AirPlant One</a>, its first sustainable aviation fuel (SAF) production facility in Moses Lake, Washington.