Just repeating myself …

In 1849, hungry gold miners crossing the Nevada desert noticed some glistening balls of a candy-like substance on a cliff, licked or ate the balls, and discovered them to be sweet-tasting, but then they developed nausea. Eventually it was realized that the balls were hardened deposits made by small rodents, called packrats … Not being toilet trained, the rats urinate in their nests, and sugar and other substances crystallize from their urine as it dries out … In effect, the hungry gold miners were eating dried rat urine laced with rat feces and rat garbage.

– Collapse by Jared Diamond

Happy Christmas!