Now playing Next World Author Paul Tough challenges common intelligence beliefs live from WISE 2014 13/11/2014
Now playing Next Sport Unbeaten Chelsea continue impressive early form as PSG make up ground in France 10/11/2014
Now playing Next Sport City win Manchester derby as Bayern pile on the misery for Dortmund 03/11/2014
Now playing Next Unreported Europe Generation wall - growing up after the fall of the Iron Curtain 24/10/2014
Now playing Next Canada MPs praise 'fearless' sergeant who led charge against Ottawa gunman 23/10/2014
Now playing Next Unreported Europe Sweden's Södertälje shelters Christian refugees from Syria and Iraq 10/10/2014