RICHMOND, Virginia, Feb. 23 -- Virginia Commonwealth University issued the following news: * * * Exploring the bladder and the brain, John Speich helps engineer multidisciplinary research In a quarter-century at VCU, the mechanical engineering professor found unexpected focus in a common condition: overactive bladder. By Sarah Murphy John Speich knows what you're thinking when you hear the term mechanical engineering. "Steel, aluminum or plastic - the typical substances," he said. "But if  more PR