ENERGY EFFICIENCY: Researchers boost refrigerator chill by 30% -- and slash power use Joshua Learn, E&E reporter Published: Tuesday, June 10, 2014 Being cool could become a lot cheaper and more green in the near future. 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.