January 30, 2009, 5am PST
Traffic is a nightmare in Cali, Colombia, the Latin American country's third-largest city. But a massive redesign is taking place, with German transit efficiency guiding the way.
July 13, 2008, 1pm PDT
<p>Globalization has spurned a renaissance in the formerly crime-ridden Colombian city of Medellin. But some worry that the city's improvements may only be temporary.</p>