The search for the lost emperor Ashoka

Author, Charles Allen, will talk about his new book Ashoka: The Search for India's Lost Emperor, which explores how India’s greatest emperor was lost to history for two thousand years and how he was rediscovered.

In a wide-ranging, multi-layered journey of discovery that is as much about Britain's entanglement with India as it as about India's distant past, Charles Allen tells the story of the man who was arguably the greatest ruler India has ever known.

• Listen to a BBC interview with Charles Allen

Admission: by free ticket only, available from yorkfestivalofideas.com/tickets