Gingerbread is not just tasty and seasonally apropos; it's also a bastion of science. Indulge your sweet tooth and learn about the chemistry and physics of baking at a Discovery Science Center event. 2500 N. Main St., Santa Ana. 10 a.m.-5 p.m. Mon.-Sat., 11 a.m.-5 p.m. Sun. Fri.-Jan. 22. $9.95-$12.95. http://www.discoverycube.org.