Add up all of these daily trips across thousands or millions of people, and commuting patterns shape whole metropolitan areas, too. They determine where congestion occurs, how we invest in infrastructure and housing, and how populations ebb and flow over the course of the day. Take Manhattan: A borough of about 1.5 million people, the island swells most days to a daytime population that's twice as large, thanks to commuters.Read full article >>...(
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