Science

Photos: Columbia Glacier's retreat

Columbia Glacier, one of Alaska's best-known, most-viewed and fastest-changing glaciers, has retreated so far back that it is now separated into two sections, a transformation captured by satellite imagery.

NASA's Earth Observatory has compiled a time-lapse series of images that shows changes to Columbia Glacier between 1986 and now, a period of rapid retreat.

Read more: NASA imagery shows Columbia Glacier's rapid retreat

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