PBS NewsHour

Studying Alaska's ice and snow to track climate change

Clip: 11/17/2014 | 8m 57s

Glacial ice is like nature's ancient history book, and today the story is climate change. Science correspondent Miles O'Brien reports from Alaska, where researchers are studying how warmer temperatures affect the ancient ice and the living things that depend on it.

Aired: 11/17/14

Rating: NR

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