Apa, 49, has become increasingly concerned about the damage inflicted on the world's highest mountain by both climate change and the waste left by careless climbers.

This spring season he hopes to conquer Everest for the 19th time, and he will use the trip to focus attention on how climate change is affecting the Himalayas -- and also bring back down as much rubbish as he can carry.

No Scott, just because I can carry 10 bags at once and a cat carrier and Olivia does not make me a sherpa.