The Invention of Nature: The Adventures of Alexander von Humboldt, the Lost Hero of Science - Andrea Wulf

From the Capuchin monks they bought bananas, cassava roots, chickens and cacao as well as the pod-like fruits of the tamarind tree which they were told turned the river water into a refreshing lemonade.

 

Just for the record: If there is one thing that really freaks me out, it´s the thought of drinking or bathing in tropical, bacteria and parasite infested river waters.

I guess I would totally suck at being an explorer or a scientist working in these regions of the world.