See 27 Sunday. Today: “Foraging a Better Future with ‘Black Forager’ Alexis N. Nelson.” Talk by James Beard Award–winning chef, forager, and writer Alexis Nikole Nelson, author of Happy Snacking, Don’t Die!, about wild foods, sustainability and cultural traditions. Signing. 5:30–7:30 p.m., Rackham Auditorium. Free; preregistration required at climateweek.umich.edu/calendar.