Kelsey Timmerman, author of “Where Am I Eating? An Adventure through the Global Food Chain,” will speak Thursday at Central College.

His presentations are free and open to the public at 11 a.m. in Douwstra Auditorium and 7:30 p.m. in Cox-Snow Recital Hall. Timmerman is the keynote speaker for Central’s global sustainability events at 11, and he will read from “Where am I Wearing? A Global Tour to the Countries, Factories, and People That Make Our Clothes” in the evening.

Guests are also invited to All Iowa Day in Central Market Wednesday, where locally sourced meals will be served 11 a.m.-1 p.m. Students and guests can meet the farmers who provided ingredients, enjoy special food tastings and watch salsa-making demonstrations.