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 ...

Cue-evoked striatal dopamine release in mice encodes bidirectional trajectory errors, spatially and temporally separated from value coding, reflecting the relationship between the speed and direction ...