by Julia ZAPPEI Agence France-Presse MAYRHOFEN, Austria (AFP) — He’s over 80, but the Austrian climber Peter Habeler — one half of the duo that was first to scale Everest without supplemental oxygen — is still fantastically fit and scaling mountain peaks, which he calls his “fountain of youth”. Many thought it impossible when he and Reinhold Messner of Italy — both Tyroleans — set out to conquer the world’s highest peak in 1978 without […]