Winter Olympics officially underway

The Winter Olympics is officially underway after the Olympic cauldron was lit in a restrained opening ceremony in Beijing. We hear from a Uighur now living in exile in the US who, back in 2008, carried the Olympic torch for China. Also in the programme: Ukraine's fallen soldiers; and taking ice cores from Everest. (Picture: The view outside the Bird's Nest Stadium during the opening ceremony. Credit: REUTERS)