University Maps Kids' Fat Traps

I fear the next step might be to place a GPS tracking device on each ice cream peddler:

When obesity researchers at the University of Pennsylvania were looking to prevent obesity among schoolchildren, they turned to an unexpected group of experts: mapmakers. The university's Cartographic Modeling Laboratory got to work, drawing maps of the neighborhoods around five Philadelphia elementary schools. What resulted were not ordinary street maps. Rather, they were maps showing "food opportunities."
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