Local News Philadelphia Science Festival: Experiments At CBS 3 Studios April 18, 2013 / 2:17 PM EDT / CBS News Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios Philadelphia Science Festival: Experiments At CBS 3 Studios