Over the past two summers, a pair of remote and treeless volcanic islands in the eastern Bering Sea broadcast signals of climate change danger in the marine ecosystem that feeds Alaska residents and supports much of the state’s economy.

The Pribilof Islands, a four-island archipelago in the eastern Bering Sea, are seen on a map of Alaska. In inset shows a close-up of St. Paul Island and St. George Island. (Map provided by the National Oceanic and Atmospheric Administration Fisheries Service)
The Pribilof Islands, a four-island archipelago in the eastern Bering Sea, are seen on a map of Alaska. In inset shows a close-up of St. Paul Island and St. George Island. (Map provided by the National…