Melting glaciers
UN reports that the world's glaciers are continuing to melt away, with record losses reported between 2004-2005 and 2005-2006 and the average rate of melting and thinning more than doubling.
The World Watch Institute, 2009 State of the World: Into a Warming World (Print Publication). A Worldwatch Institute Report on Progress Toward a Sustainable Society. ed. Linda Starke. Published by W.W. Norton & Company in New York, NY. page xxii.