Lisa Randall - Are there Extra Dimensions?

Free access to Closer to Truth’s library of 5,000 videos: Extra dimensions—beyond length, width, height—seem like the stuff of science fiction. What would extra dimensions be like? Is time the fourth dimension? Does string theory require ten or eleven dimensions? Could deep reality be so strange? And, anyway, why would we care? Watch more interviews with Lisa Randall: Watch more interviews on the possibility of extra dimensions: