"Meltdown" -- Water scurity is going to be one of the most pressing issues as the world faces the challenge of climate change. If averag global temperatures rise by only only a few degrees, most of the world's glaciers will disappear, leading to floods and water shortages. This episode travels to Peru, one of the dryiest regions of the world, whch now faces the loss of its already stretched water resourses from melting glaciers in the high Andes. This report looks at the situation, the prognosis and what th countr and its peope are doing to cop with their dwidling water resources. Recorded from BBC on 14.11.09