THE INCREDIBLE SHRINKING GLACIER

Puncak Jaya Glacier in the Irian Jaya province of Indonesia. Left: 1936. Middle: 1972. Right: 2005.

Photographed by J.J. Dozy in 1936; by the United States Geological Survey during the Carstensz Glaciers Expeditions in 1972; and by a NASA astronaut on the International Space Station in 2005. Credit: NASA/JSC/USGS/ISS Crew Earth Observations experiment and the Image Science & Analysis Group.