18th-Century Portuguese Library Has Bats That Protect the Priceless Books Housed Inside
Stashed inside the Biblioteca Joanina at the University of Coimbra, Portugal, are more than 60,000 books, many of which are first or historical editions dating back hundreds of years. Preserving such precious volumes demands care, attention, and, in this case, bats. Every night, colonies of bats emerge from behind the towering bookshelves, swooping across the 18th-century library in search of the beetles and moths that would otherwise chew up manuscript pages.