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Glaciers have been around for a long time. Many formed at the end of the last ice age, about 20,000 years ago. Since then, they have shaped Earth's landscape, helped cool the planet, and provided living things with fresh water--all while weathering changes in Earth's climate... Read Full Overview

Glaciers have been around for a long time. Many formed at the end of the last ice age, about 20,000 years ago. Since then, they have shaped Earth's landscape, helped cool the planet, and provided living things with fresh water--all while weathering changes in Earth's climate... Read Full Overview

Glaciers have been around for a long time. Many formed at the end of the last ice age, about 20,000 years ago. Since then, they have shaped Earth's landscape, helped cool the planet and provided living things with fresh water, all while weathering changes in Earth's climate... Read Full Overview