NASA Satellites Keep Watch on U.S. Food Supply

The USDA uses Landsat satellite data to track crop acreage and yield across the U.S. This program, which began in 1997, expanded significantly after Landsat data became free in 2008, allowing the USDA to map 48 states. The data helps estimate crop yields, aiding farmers and traders in setting prices. The detailed satellite imagery reveals crop patterns and changes, such as crop rotation and shifts in crop types. The open access to this data supports farmers and helps maintain the nation's food supply.

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