Unlike most people, Rose Cory wasn’t drawn to northern Alaska for the vistas of the weather-scarred Brooks Range or the braided rivers winding through seemingly endless tundra. Rather, she was lured by what it contains on an atomic level: “It’s the carbon,” Cory said. To Cory, an aquatic geochemist with a warm face and a bright voice, that fascination is obvious: Over thousands of years, the Arctic has stored carbon in soil that is frozen year-round. Known as permafrost, that soil is now thawing, and as it does, more and more of its long-trapped carbon is being released into the atmosphere.
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