Profiles in Science - Inside the C.I.A., She Became a Spy for Planet Earth

Portrait of Linda Zall, who worked at the CIA and helped make a lot of environmental observations available for . From early spy satellites giving information on sea ice, snow cover, glaciers and (lake) shorelines, to ocean floor observations from the Navy.

After her retirement her group, called Medea, was closed down in 2015 and will hopefully be revived again by Biden.

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