Jim Al-Khalili: On Time
Does time have a beginning and end? Can it be reversed? Is it even real? While we have come along way towards deciphering the laws of the universe, many physicists still regard time as one of the greatest unsolved mysteries. Join the quantum physicist, BBC The Life Scientific broadcaster and New York Times bestselling author for answers to all of the above and more, as he brings us his fresh insights into the meaning and nature of time.
Talking to Julia Wheeler