Our glossary contains general and scientific terms related to Earth's frozen places. You can search for particular terms, or browse the glossary by topic.

See photographs of the same glacier, taken from the same vantage point and at the same time of year, but many years apart. These photographs, from our Glacier Photograph Collection, can show evidence of glacier and climate changes over time.

Search for Web-accessible teaching or learning materials relevant to Earth system education.

We have created Google Earth™ files that enable you to overlay data-based images on a virtual globe. Our goal is to help people better understand the cryosphere. Get Google Earth files on sea ice, snow, and more.

Explore and dynamically map the Earth's frozen regions. Viewed from a polar perspective, the available data sources include snow cover, sea ice extent and concentration, glaciers, ice sheets, permafrost, and other critical components of the Earth's cryosphere.

Browse and request items from our collection of printed materials, films, and other multimedia that can help teachers and students explore and learn about Earth's frozen regions.