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.
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.
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.
An iceberg sank the Titanic. Find out why climate scientists, oceanographers, and biologists watch icebergs today.