Professor Tom Kirkwood , this year's Reith lecturer, explores the topic of ageing. Professor of Medicine and head of the department of gerontology at the University of Newcastle, he examines the impact of science on the human lifespan - both now and in the future. Sue Lawley introduces each of the five lectures from various venues. 3: Sex and Death
From the Edinburgh International Science Festival. " Does sex shorten our lives? Can it be, as some have suggested, that ageing and death are the price we pay for sex?"
Producer Charles Sigler. Editor Gwyneth Williams WEBSITE: www.bbc.co.uk/radio4/reith2001 Repeated Saturday 10.15pm