1. Pine forests near the central Bosnian town of Vlasic covered by snow in winter, on February 9, 2012. (Reuters-Dado Ruvic) 
2. Rows of houses near the London 2012 Olympic Park in London, England, on March 27, 2012. (Reuters-Stefan Wermuth) 
3. A view of Petare shantytown, east of Caracas, Venezuela, taken on February 15, 2012. (Leo Ramirez-AFP-Getty Images)

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