The Aletsch Glacier pictured in 1865 is seen in Belalp, Switzerland. (Photo: Adolphe Braun/Glaziologische Kommission der Akademie der Naturwissenschaften Schweiz/ETH Library Zurich/Handout via Reuters) The Aletsch Glacier is pictured in the Swiss Alps in Belalp, Switzerland Sept. 3, 2019. (Photo: Denis Balibouse/Reuters)