Countries around the world are issuing special stamps to herald the arrival of International Polar Year 2007-2008. The initiative is being spearheaded by eight Arctic nations — the United States, Canada, Denmark, Finland, Greenland, Iceland, Norway, and Sweden. In addition to the individual releases, a booklet of souvenir sheets will be issued containing all eight sets.

The U.S. Postal Service will issue a souvenir sheet of two 84-cent international letter rate stamps which will also be issued as a pane of 20 under the title ‘Polar Lights’. In 1958, the United States issued a three-cent stamp to commemorate the International Geophysical Year 1957-58.

Canada Post will issue its set of two stamps on February 12th. Sweden will release its stamps on January 24, and Norway will release a pair of IPY stamps on February 25th.

You can see images of all the planned releases on the Danish IPY website.