Documenting Glacial Change

A collection of repeat photography of glaciers from the National Snow and Ice Data Center (NSIDC). The photos are taken years apart at or near the same location, illustrating how dramatically glacier positions can change even over a relatively short period in geological time: 60 to 100 years. Background essay and discussion questions are included.

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WGBH

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Teaching Tips

Teaching Tips

Sliders work well. Photos are well-enough-aligned for change over time to be striking.