Mad Science's "Engineer a Better World" show, 2:30 p.m., Frost Memorial LIbrary. Kick off summer reading program with science demonstrations and activities. FMI: 325-4706.

Full-dome digital planetarium show "Nine Planets and Counting" at the Francis Malcolm Science Center, 7 p.m. and 8 p.m. Free admission; reserve a seat at 488-5451.