In the pre-colonial pocket of modern Rabat, the walls of the Moroccan city’s Old Medina weave between slippery stone streets. Doors of varying heights, colors and sizes decorate these corridors, concealing...

When Kative Crivellaro smoked a joint last summer in Amsterdam, she was nervous. Not because marijuana is illegal in the United States, but because she “was desperately trying not to come off as an American...