The Discovery of Global Warming

December 2005      [HOME]     List of illustrations     BACK to 20th cent. temp - BACK to ice sheets

The Pasterze Glacier in Austria, shown here in 1875 and 2004, is one of many around the world that have been retreating, exposing rock that has not seen daylight for thousands of years.
(For more pictures of global warming effects see Gary Braasch's photos.)

Left: Courtesy H. Slupetzky / University of Salzburg; Right: Copyright 2004 Gary Braasch, reproduced by permission.
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Copyright © 2005 Spencer Weart & American Institute of Physics