Henry Marsh neurosurgeon talking to Ian McEwan at Hay Festival 2014.

- Image ID: E3MNDF

Henry Marsh neurosurgeon talking to Ian McEwan at Hay Festival 2014.

Jeff Morgan 05 / Alamy Stock Photo

Image ID: E3MNDF

Location: Hay Festival 2014, Hay-on-Wye, Powys, Wales, UK