That is the question the New York Times mooted regarding the fate of El Alto, Bolivia, a large suburb of the capital, La Paz. Residents of metropolitan La Paz had long depended on the melting glaciers ringing their city to supply drinking water- but now that these glaciers are disappearing, the very lives of residents of the La Paz metropolis are at risk.
source: http://www.yesmagazine.org/planet/its-too-late-to-compromise-on-climate