Cryosphere Quick Facts
Arctic Sea Ice
Find out how Arctic sea ice is changing and why it matters. Arctic sea ice keeps the polar regions cool and helps moderate global climate.
Ice Sheets
Learn about the Greenland and Antarctic ice sheets, the Earth's only ice sheets. Together, these ice sheets contain more than 99 percent of the freshwater ice on Earth.
Ice Shelves
Find out why ice shelves have begun to collapse. In recent years, ice shelves on the Antarctic Peninsula and along the northern coast of Canada have experienced rapid disintegration.
Icebergs
An iceberg sank the Titanic. Find out why climate scientists, oceanographers, and biologists watch icebergs today.
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