State officials announced this week that both the Porcupine and Central Arctic caribou herds have faltered. The data mirrors a broader trend for Arctic herds.

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The Canning River, which flows on the western edge of the Arctic National Wildlife Refuge into the Beaufort Sea, is seen from the air on Aug. 23, 2015. The coastal plain of the refuge, through which ...

Strong floodwaters can uproot buildings and the infrastructure first responders need to reach victims. But what if there are no roads in the first place? Typhoon Halong struck the west coast of Alaska ...