Greenpeace members and Tibetan mountain guides display banners at Mount Everest which read 'Protect our Water Source, Stop Global Warming' Banners are displayed by a glacier melt along the path of the Middle Rongbuk Glacier which the team are here to investigate. The Rongbuk Glaciers are one of the prime sources of water feeding into the major rivers of China and India. Glaciers in the Himalaya are receding faster than in any other part of the world as a result of global warming.