Latvian alpinist without oxygen mask.

Ed Viesturs. American latvian. One of the best alpinists in the world, has climbed in 14 highest mountains in the world without using oxygen mask. He says "I want to stick my nose everywhere and sense the feeling which comes over me when I am there. I don`t want to isolate myself with oxygen mask."Viesturs has climbed in Everest six times. He hasnt highlighted his origin to be latvian, he thinks of himself as american. In one interview he was joking, that his physical abilities comes from "supercharged latvian blood".