NASA has recently posted hundreds of satellite images and photographs taken over a 100 year period comparing modern weather patterns, ice coverage, and population growth all over the world with their counterparts in the 1900s. The contrast is, in many cases, stunning. Here is a selection from Images of Change that show that the change is undeniably real and drastic.
Caption text courtesy NASA.










Left: May 12, 2001. Middle: July 7, 2003. Right: June 19, 2005.
Along the margin of the Greenland Ice Sheet, outlet glaciers flow as icy rivers through fjords and out to sea. These pictures show a fjord in which Helheim Glacier (on the left) is crumbling into large and small icebergs (light blue, on the right).

Warming Island, Greenland. Left: August 11, 1985. Center: September 5, 2002. Right: September 4, 2005. On January 16, 2007, the New York Times reported that a new island had been found in Greenland. Warming Island was thought to be an ice-covered peninsula, but it was exposed as an island in 2005, when an ice bridge melted to reveal an open-water strait. More islands like this may be discovered if the Greenland ice sheet continues to disappear.


The Filchner Ice Shelf, on the Antarctic coast facing the Atlantic Ocean, is the largest ice shelf by volume on Earth. In the austral winter of 1986, its front edge broke off, forming three large icebergs. This was a major, long-awaited calving. Ice shelves develop mainly from glaciers flowing slowly downhill toward the ocean.


