Kitchen Chemistry with Ruff Ruffman: Part 2 – Toast will repeat at 3 p.m. Friday, Feb. 22, at Mundy Branch Library. Children ages 5 to 12 can discover if you can un-cook something by cooling it down? Or if there is a way to un-toast toast? Learn the answers to these questions and more as library staff explores kitchen chemistry with the star of the PBS Kids show "Ruff Ruffman!" Call (315) 435-3395 to sign up.