What does Alfonso XIII's wife have to do with Gredos goats? And Pope Leo X with Indian rhinoceros? Where does the term "environment" originate? And the word "biodiversity"? What relationship is there between German spies and malacology? And between the steel industry and paleontology? All these and many other questions are answered in the pages of "Natural historia." Conceived as a free space for historic reflection on natural sciences and nature itself, the content of this book has been previously published in "Quercus "magazine bit by bit. This volume compiles a selection of 50 entries whose variety offers a little bit of everything, sure to interest anyone curious about the natural world around us and about the relationships that humans have been piecing together throughout history.