GPS Adventures, a family-friendly introduction to geocaching opens this Saturday at the Maryland Science Center. The exhibit features an educational look at the history of navigation from the compass rose to GPS Technology, a 4,500 square foot maze populated with hidden caches, and a geocaching adventure in Baltimore’s Inner Harbor using real GPS devices.Very cool stuff!! For those interested, the official website for GPS Adventures is http://www.gpsmaze.com/ and the Maryland Science Center can be found on the web at http://www.marylandsciencecenter.com.