Technology and the Philippines rescue effort
As supplies start arriving in regions of the Philippines devastated by the typhoon, we hear how advances in communications and mapping technology are aiding rescuers. Also how efforts to curb opium production in Afghanistan seem to be failing, with reports of a record harvest. The BBC's Nigel Cassidy reports from northern Portugal, where workers are returning to more traditional occupations such as fishing. We also ask why anyone would pay $142m for a painting - and how a new type of hydrogen fuel technology could revolutionise access to power in the developing world.