“…This engagement with the science of the day required extensive investigations, for which they drew not only on their own work -as director of the Bogotá Observatory, for instance, Caldas established a regular programme of astronomical and meteorological observations (Caldas, 1912) -but also on that of a wide network of correspondents in towns and cities across modern-day Colombia and Peru. Their significance as scientists (and, in Caldas' case, as collaborator) were acknowledged by Alexander von Humboldt, whose own writings, many based on the results of his travels in Latin America between 1799 and 1804, are widely recognized as contributing to the development of modern geography, ecology and environmental sciences (Glick, 1991;Zimmerer, 2006;Cushman 2011).…”