Fascinating Davos moments with "healthy ageing" scientist Constantinos Demetriades

The primary advantage of regular returns to the World Economic Forum's annual meeting in Davos is the way one gets to witness broad global trends imposing themselves - or fading away. In recent years, the science of ageing has been moving ever higher on the agenda, aligned perhaps with the demographic shift in the rich countries which dominate the global economy. Constantinos Demetriades (36) is one of the field's star researchers, leading the prestigious Max Planck Institute for the Biology of Ageing. So if you want a long and healthy life, listen to this fascinating interview - one of those "only in Davos" experiences.