Three Great Things to Do in Tucson Today: Monday, Sept. 17

The Nazca Lines Mystery. Join Professor Michael Chriss from the Steward Observatory for this discussion about the enormous petroglyphs in the Nazca Desert in Peru. Viewed from above, the petroglyphs—which are up to 1,200 feet long—depict creatures like birds, fish, llamas, jaguars, monkeys and humans, as well as plant-like shapes.…