Chacaltaya (Bolivia) (AFP) – Once the highest ski resort in the world but now a crumbling relic to climate change in the Bolivian Andes, Chacaltaya was a popular family weekend retreat for inhabitants of La Paz, just 30 kilometers away. By 1998, the Chacaltaya glacier had been reduced to just seven percent of its size in 1940, while it disappeared entirely in 2009.