Justin Timberlake

When was the last time you saw a science special in prime time on one of the major networks? Better yet, when was the last time you heard rock stars speaking passionately and convincingly about the value of science, engineering and technology? If you had to think long and hard before answering, you're not alone. These phenomena are as rare today as sightings of Halley's comet. But they did happen -- in case you missed it -- as recently as this month when will.i.am, the front man and producer for the award-winning musical group The Black Eyed Peas, teamed up with eminent technology innovator…