The Curious Cases of Rutherford & Fry: The Silver Lining

Series 19, episode 4

Mathematician Hannah Fry and geneticist Adam Rutherford investigate why human hair goes grey. They hear from the pilot whose hair turned white after a flight where all four of his engines failed after flying through a volcanic ash cloud. Is ever possible for it to go white overnight from shock?

Cast (unconfirmed)

Adam David Rutherford
Hannah Fry