In this Dec. 28, 2012 photo, a child flies a kite in the Mare shantytown in Rio de Janeiro, Brazil. The city’s densest neighborhoods, its favelas, or shantytowns blanket entire hillsides, providing ... more 
In this Dec. 28, 2012 photo, a child flies a kite in the Mare shantytown in Rio de Janeiro, Brazil. The city’s densest neighborhoods, its favelas, or shantytowns blanket entire hillsides, providing most of the city’s affordable housing. Now, those communities are being charted after decades of informality, each route and alley outlined and their names researched. A nonprofit organization run by current and former favela residents called Redes da Mare kick-started the first mapping program in the grouping of favelas known as Mare with a simple but powerful goal: putting their homes on the map, with named streets, zip codes and official addresses. (AP Photo/Silvia Izquierdo) less 
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Associated Press | Photo By Silvia Izquierdo
Tue, Jan 22, 2013 1:27 PM EST