This Oxford at Said seminar was dedicated to the topic of Ageing. Three distinguished academics from Oxford University discuss the social, biological and ethical implications for an ageing society. For the foreseeable future, population ageing is irreversible and will fundamentally affect all areas of life from the workplace to the family. Sarah Harper outlines the most important social consequences of population ageing and discuss potential policy implications. Lynne Cox explains current research strategies to find the genetic drivers of ageing which might eventually help us to slow the ageing process and Julian Savulescu finishes the seminar by discussing his manifesto on 'Why we need a war on ageing' arguing that mankind has a moral obligation to strive for a longer and better life.