by Pablo COZZAGLIO / Alberto PEÑA Agence France-Presse AYSEN, Chile (AFP) – A crack widens in the San Rafael glacier in Chile’s extreme south, and a ten-storey iceberg crashes into the lake by the same name — a dramatic reminder of the impacts of global warming. In the lake San Rafael, about 100 icebergs float today, pieces broken off from the glacier that 150 years ago stretched out over two-thirds of the body of water […]