A physics professor will try to turn back time in an experiment at the Miami Museum of Science. It's back to the future all over again -- at least, that's what Carlos Dolz has in mind. The Florida International University physics professor plans to take time to task at 10 a.m. Wednesday, when he presents an experiment that involves using acceleration to speed up a digital clock by four seconds. Dolz's experiment -- which takes six hours to finish -- will become part of Playing With Time, the current exhibit at the Miami Museum of Science. Dolz, who has been...