Energy efficiency: how to improve everyday life?

Energy efficiency seeks to deliver the same service by using less energy. How do we make homes, transportation and industry more energy efficient? Patrice Geoffron, Director of the Centre of Geopolitics of Energy and Raw Materials at Université Paris-Dauphine; Jean-François Minster, Senior Vice President of Scientific Development at Total and Jean-Marie Chevalier, Senior Associate at Cambridge Energy Research Associates address these issues.