CARBON CAPTURE: Entrepreneurs vie to turn heat-trapping gas into a red-hot commodity Katherine Ling, E&E reporter Published: Wednesday, April 2, 2014 Startups are testing technologies they hope will turn an environmental problem in to big business opportunities. Please subscribe to Greenwire to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.