The clock pauses and, for a brief moment, appears to tick back a second. Why are we fascinated by stories about time travel? Unpacking time-travel narratives from H.G. Wells to Back to the Future, the Nebula and Hugo Award-winning science fiction writer Ted Chiang sheds light on the question and also considers what physics has to say on the subject.

This programme is made possible with the support of the U.S. Embassy Singapore.