"INTERNATIONAL POLAR YEAR (IPY) 2007 - 2008"
     Home: http://www.ipy.org/
     About: http://www.ipy.org/about/what-is-ipy.htm
     History of IPY: http://www.ipy.org/development/history.htm
     Links to IPY sponsors and other polar organizations: 
            http://www.ipy.org/links/

"Teachers Experiencing Antarctica and the Arctic"
     TEA ARMADA PROJECT:
            http://tea.armadaproject.org/index.html
     Meet the Teachers:
            http://tea.armadaproject.org/tea_meetteachers.html
     TEA Classroom Activities:
        http://tea.armadaproject.org/tea_classroommaterials.html
     TEA Polar Links:
        http://tea.armadaproject.org/tea_sites_antarcticresearch.html

"A Tour of the Cryosphere: The Earth's Frozen Assets"
        http://www.nasa.gov/vision/earth/environment/cryosphere.html
        8-minute DVD/web multimedia program about the polar regions,
with amazing imagery; close-captions available.

Robert Swan's Leadership on the Edge 2041
     http://www.2041.com/
   Inspire Antarctic Expeditions:
     http://www.2041.com/expeditions/IAE.html

NASA Goddard Space Flight Center
      "Antarctica: Lake Vostok"

NASA Goddard Space Flight Center Cryosphere Sciences Branch
        http://neptune.gsfc.nasa.gov/csb/
        The Cryospheric Sciences Branch is a branch of the
Hydrospheric and Biospheric Sciences Laboratory located at
NASA's Goddard Space Flight Center in Greenbelt, Maryland.
The mission of the Cryospheric Sciences Branch (CSB) is to
increase our understanding of the ice cover.

NASA's ICESat (Ice, Cloud, and land Elevation Satellite)
        http://icesat.gsfc.nasa.gov/
        ICESat (Ice, Cloud,and land Elevation Satellite) is the
benchmark Earth Observing System mission for measuring ice
sheet mass balance, cloud and aerosol heights, as well as land
topography and vegetation characteristics.

National Snow and Ice Data Center
        http://www.nsidc.com/
        Established by NOAA as a national information and referral
center in support of polar and cryospheric research, NSIDC archives
and distributes digital and analog snow and ice data.

        "The Crysophere: Where the World Is Frozen"
        http://www.nsidc.com/cryosphere/

NOAA Marine Modeling and Analysis Branch (MMAB) Sea Ice
        http://polar.ncep.noaa.gov/seaice/
       The Polar and Great Lakes Ice group works on sea ice analysis
from satellite, sea ice modeling, and ice-atmosphere-ocean coupling.

"Snowball Earth":
    Some 600 - 700 million years ago, according to some data, much of
Earth was covered by ice. Here are selected links to online resources about
this theory:

http://www.snowballearth.org/

http://www.eps.harvard.edu/people/faculty/hoffman/snowball_paper.html

http://www.bbc.co.uk/science/horizon/2000/snowballearth.shtml

http://www.spaceref.com/news/viewnews.html?id=149