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PBS News Hour

How soil and squirrels offer cues on Alaska climate change

On the Alaskan tundra, researchers are tracking the march of global warming. Science correspondent Miles O’Brien explores how soil composition and the sleep schedules of squirrels might offer data on the ways warmer temperatures are affecting ecosystems.
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February 5, 2026 - PBS News Hour full episode
57:46
Season 2026 Episode 30
February 5, 2026 - PBS News Hour full episode
February 5, 2026 - PBS News Hour full episode
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Season 2026 Episode 29
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Season 2026 Episode 28
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Season 2026 Episode 27
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February 2, 2026 - PBS News Hour full episode
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Season 2026 Episode 26
January 30, 2026 - PBS News Hour full episode
January 30, 2026 - PBS News Hour full episode
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Season 2026 Episode 25
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January 29, 2026 - PBS News Hour full episode
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January 28, 2026 - PBS News Hour full episode
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Season 2026 Episode 23
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Season 2026 Episode 19
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