"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.

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.