Figure 1. Alexander von Humboldts vegetation of the Andes (source: Anne Buttimer Alexander von Humboldt and planet Earths green mantle Cybergeo : European Journal of Geography [online]. Epistemology history teaching document 616. Available from doi:10.4000/cybergeo.25478. Online since August 2012 [accessed January 2015]). #worldhistoryteaching #world #history #teaching #john #green