Neurosurgeon Henry Marsh on risks, ethics, and the Ukraine.

Dr Henry Marsh offers an insight into the highs and lows of a life dedicated to operating on the human brain. With candour and compassion, Henry Marsh reveals the exhilarating drama of surgery, the chaos and confusion of a busy modern hospital, and above all the need for hope when faced with life's most agonising decisions.

5x15 brings together five outstanding individuals to tell of their lives, passions and inspirations. There are only two rules - no scripts and only 15 minutes each.

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