Since Philadelphia is arranged on a grid system, the mostly one-way roads are easy to navigate. Helpful maps are posted along street corners across the city – watch for the "Walk! Philadelphia" signs ...
Chicago's eastern boundary is formed by Lake Michigan, and the city is divided by the Chicago River into three geographic sections: the North Side, the South Side and the West Side. These sections ...
A Chinese doctoral student had been sentenced to 15 years in prison for illegally providing classified topographic maps and military information to foreign entities in exchange for profit, according ...
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