Professor Tom Kirkwood, this year's Reith lecturer, explores the topic of ageing. He examines the impact of science on the human lifespan - both now and in the future. Sue Lawley introduces this concluding lecture from the International Centre for Life, Newcastle upon Tyne. New Directions
"We are at a turning point. The decisions we take in the next few years will have far-reaching con sequences for the state of future society." WEBSITE: [web address removed] Repeated from Wednesday