Italian Reinhold Messner, the first climber to scale Everest without using bottled oxygen and the first person to climb all of the world's 14 highest peaks, speaks at a function to mark the 60th anniversary of the conquest of Mount Everest at the British Embassy, in Katmandu, Nepal, Wednesday, May 29, 2013. Nepal celebrated the anniversary on Wednesday by honoring climbers who followed in the footsteps of Edmund Hillary and Tenzing Norgay. (AP Photo/Niranjan Shrestha)