Leverett Meltwater (1 of 3) (IMAGE) American Geophysical Union Caption The sediment-rich meltwater river originating from Leverett Glacier in southwest Greenland, pictured in June 2012. Not only is Greenland's melting ice sheet adding huge amounts of water to the oceans, it could also be unleashing 400,000 metric tons of phosphorus every year, according to a new study. Credit Credit: Jon Hawkings Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.