A team of geographers has developed a series of models -- using a massive, crowdsourced, fitness-tracking database -- that strongly predict how terrain slope affects human travel rates. The geographers will apply their new models to wildland firefighters: During their spring training in 2019, nearly a dozen fire crews in Utah, Idaho, Colorado and California will use GPS trackers to record their movements and log their travel rates.
Credit: National Science Foundation/Karson Productions
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