Long before synthetic fertilizers, the global guano trade reshaped farming, fueled American expansion and exposed the hidden human costs of feeding the modern world.
Articles on Alexander von Humboldt
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Passionate about sharing his scientific findings, Humboldt paid for his expeditions, books and lectures out of his own pocket.
Alexander von Humboldt and Charles Darwin built on the work of Acosta, a pioneering Spanish Jesuit missionary, scientist and naturalist.
Alexander von Humboldt – sometimes called the last Renaissance man – was born in Berlin 250 years ago. His influence on science is still felt today.



