AC Grayling in conversation with Gebisa Ejeta, a World Food Prize Laureate and an advisor to President Barrack Obama. Show more

AC Grayling in conversation with Steven Pinker, a leading authority on language and mind. Show more

AC Grayling in conversation with Sir Paul Nurse, a Nobel Prize-winning cell biologist and the new President of The Royal Society, the oldest science establishment in the world. Show more

AC Grayling in conversation with Vilayanur Ramachandran, the 'Marco Polo' of neuroscience. He is the Director of the Center for Brain and Cognition at the University of California, San Diego. Show more

Valerie Mizrahi is the Director of the Institute of Infectious Disease and Molecular Medicine at the University of Cape Town, where she has done ground-breaking work on tuberculosis. Show more