Portugal, good at firefighting, now faces a 'fire paradox'

If you keep putting out wildfires but don't manage a forest, the undergrowth and vegetation only continue to grow, becoming fuel for future mega-fires that can burn beyond human control. Portugal is learning that, and hoping to shift more emphasis from fire suppression to prevention - namely, improving how forests are managed so that they'll burn less. The World's Gerry Hadden reports from Portugal.