Chemicals

High nitrate levels in drinking water—a common result of agricultural chemical use—have been linked to cancer, birth defects, and neurological disorders. To determine people’s long-term exposure rates to nitrates and other potentially cancer-causing chemicals, scientists need water quality data as well as information about what types of crops were grown where in the past. Researchers are able to extract historical U.S. crop information from satellite images archived at EROS that form a detailed record of land cover, including crop types, going back more than three decades.

Agricultural Scenes
Agricultural Scenes

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