In car-clogged urban areas across the world, the bicycle is enjoying a second life as a legitimate form of transportation. City officials are rediscovering it as a multi-pronged solution to acute, 21st-century problems, including affordability, obesity, congestion, climate change, inequity, and social isolation. As the world's foremost cycling nation, the Netherlands is the only country where the number of bikes exceeds the number of people, primarily...