On Friday Sam Weller, the authorized biographer for sci-fi author Ray Bradbury, will appear at Changing Hands Bookstore in Tempe as part of the store’s “Food for Thought” series. Weller, a journalist and professor at Columbia College in Chicago, is the author of The Ray Bradbury Chronicles: The Life of Ray Bradbury, which describes the writer who envisioned rocket travel to outer space but never learned to drive a car or operate a computer.

Bag lunches for the event are available for $5.50 at the adjacent Wildflower Bread Company; just call (480) 838-9773 and as for the “Food for Thought” special.