Last call for 'Mindbender Mansion'
This weekend is your final chance to gain membership to the exclusive Mindbender Society. The Science Museum of Minnesota exhibit tests the brainpower and problem-solving skills of participants. Be prepared to think abstractly to solve scientific challenges, gather clues and secret passwords to gain membership. (9:30 a.m.-9 p.m. today-Sat. 9:30 a.m.-6 p.m. Sun., 120 W. Kellogg Blvd., St. Paul. smm.org.) MELISSA WALKER
