From the National Snow and Ice Data Center, the new State of the Cryosphere Website discusses the cryosphere and its close relationship to "climate variability." Cryospheric regions, or areas where water is found in solid forms, are highly sensitive to changes in temperature. This is because snow and ice "exist relatively close to their melting point and frequently change phase from solid to liquid and back again." The implications of climate change and fluctuations in Northern Hemisphere snow cover, sea ice, mountain glaciers, and sea level are explored here. The site contains helpful links, an introduction, a glossary, and references.