RESEARCH: Antarctic glacier thinned rapidly in past and could continue to do so in future -- study Stephanie Paige Ogburn, E&E reporter Published: Friday, February 21, 2014 The Pine Island Glacier, which sits on part of west Antarctica, is the single largest contributor to global sea-level rise. 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.