The world may run on it, but do we actually know what 'time' really is? Travel back to the Big Bang, where physicists believe the ultimate secrets of time may be hidden. Brian Greene is going to let you in on a secret: We've all been deceived. Our perceptions of time and space have led us astray. Much of what we thought we knew about our universe-that the past has already happened and the future is yet to be, that space is just an empty void, that our universe is the only universe that exists-just might be wrong. The Fabric of the Cosmos, a four-hour series based on the book by renowned physicist and acclaimed author Brian Greene, takes us to the frontiers of physics to see how scientists are piecing together the most complete picture yet of space, time and the universe. With each step, audiences will discover that just beneath the surface of our everyday experience lies a world we'd hardly recognize-a startling world far stranger and more wondrous than anyone expected.