Local guides are refusing to take climbers up Mt. Everest after the deaths of at least 13 of their colleagues. Mike Hanna speaks to Dipendra Paudel, spokesman from the mountaineering section of Nepal's Tourism Ministry, Phinjo Sherpa, a leading figure from the Sherpa community and member of the Saving Mount Everest Project, Alan Hinkes, a mountaineer who has climbed Everest and the rest of the world's 14 highest peaks, and David Pritt, director of Adventure Peaks, which organises expeditions to Everest.