Linguist Anne Curzan, dean of the U-M College of Literature, Science & the Arts, is joined by Rebecca Hector, her cohost for the weekly Michigan Public segment That’s What They Say, to discuss  English grammar & usage, new slang, and language peeves. 7 p.m., the Ark, 316 S. Main. Free; preregistration required at michiganpublic.org/events. (734) 761–1451.