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Earth’s frozen regions—its snow, ice, glaciers, ice sheets, and frozen ground—collectively form the cryosphere, a sensitive indicator of global climate change.

Snow

Snow

29 photos

Sea ice

Sea ice

143 photos

Antarctica

Antarctica

19 photos

Greenland

Greenland

78 photos

Glaciers

Glaciers

115 photos

Icebergs

Icebergs

43 photos