Associated Press: Global climate change threatens the complete disappearance of the Andes’ tropical glaciers within the next 20 years, putting precious water, energy and food sources at risk, according to a World Bank report presented here Tuesday. The study says glacial retreat has already reduced by 12 percent the water supply to Peru’s dry coastline, home to 60 percent of the country’s population. “In Peru, (the glaciers) are melting very quickly. More than 20 percent of the glacial ice caps …