What was the subject of the essay Jan Zalasiewicz wrote to win the 2023 Ig Nobel prize in 2023?

This year’s Chemistry Prize and Geology Prize were awarded jointly to the University of Leicester’s Jan Zalasiewicz for his work explaining why scientists like to lick rocks in the essay “Eating Fossils,” which appeared in the Nov. 2017 issue of the Palaeontology Newsletter. Licking a rock is an important technique, Zalasiewicz writes. “Wetting the surface allows fossil and mineral textures to stand out sharply, rather than being lost in the blur of intersecting micro- reflections and micro-refractions that come out of a dry surface.”