Kim Hill talks to Professor Damian Bailey, a world leading expert on concussion and the ageing brain, and Director of the Research Institute of Science and Health for the University of South Wales. He is a consultant to the British Olympic team, and an experienced free diver and mountaineer, who in April made a summit attempt on Everest with extreme athlete Richard Parks. Professor Bailey was a guest this week at the 2016 New Zealand International Science Festival in Dunedin.
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