BBC Audio | AntiSocial | Air conditioning and the environment

As UK summers get hotter and heatwaves become more frequent, more people are considering air conditioning as a way to keep cool. But how does air conditioning actually work, and in our efforts to cool down are we harming the planet? Chris Warburton speaks to Rob Gross, director of the UK Energy Research Centre (UKERC) and Professor of Energy Policy and Technology at Imperial College London.