Top brain surgeon Henry Marsh is facing his own life-threatening diagnosis. He reveals the huge risks and emotional impact of a job filled with difficult life-and-death decisions.

Dr Chris van Tulleken investigates a mysterious virus that could cause the next pandemic, one scientists think will be deadlier than Covid-19. This is a global hunt to uncover 'Disease X'.

Professor Jim Al-Khalili unravels the mystery of how the most complex structure known in the universe - the human brain - came to exist.

From playing computer games with chimpanzees to studying modern relationships, Jim Al-Khalili investigates how the brain evolved and how they differ from AI.