How can we reconcile short-term politics with the long-term global problems we face? Should scientists wield more political power? Is it fair to criticise politicians for faults in our political system, or is it our failing? Or is democracy itself to blame? David puts these questions to Lord (Martin) Rees – cosmologist, Astronomer Royal, and former President of the Royal Society – and someone who believes that mankind only has a 50% chance of making it through this century without a serious global “setback”. The team then debate this week’s political events. Posted 18/2/15. For more information about this episode and others go to http://www.cam.ac.uk/podcasts/election