When over 90% of a city's residents are happy with their city, somebody must be doing something right. In Curitiba, a quaint, mid-sized town in southern Brazil, some forty years of sensitive urban design interventions have created a city that is pleasant and sustainable, and one that has managed to avoid many of the ills that have plagued Brazilian cities. Countless innovations can be traced back to Curitiba, and over the years the place has become something of a Mecca for architects and urban planners from all over the world. But for those who can't afford the trip to Brazil in these tough economic times, a documentary film called A Convenient Truth is the next best thing.