Scientists are making considerable progress in the race to slow the ageing process of our cells, and in turn, our bodies. But what would living for longer actually mean for the world? How government legislation and impatient consumers are forcing the advertising industry to adapt (13:19). And, the story behind a famous, 200-year-old Christmas poem (21:29). For a limited time, visit economist.com/gift to redeem 30% off gift subscriptions to our print and digital editionsSign up for a free trial of Economist Podcasts+. If you’re already a subscriber to The Economist, you’ll have full access to all our shows as part of your subscription. For more information about how to access Economist Podcasts+, please visit our FAQs page or watch our video explaining how to link your account. Hosted on Acast. See acast.com/privacy for more information.