SCIENCE: Australia's grassland, not Amazon rainforest, explains 2011's massive land-based carbon sink -- study Elizabeth Harball, E&E reporter Published: Thursday, May 22, 2014 In 2011, the planet did humanity an unusually large favor. Please subscribe to ClimateWire 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.