World stocks break 500 barrier, oil still high

The global rally in stocks is showing no sign of slowing, as upbeat investors pushed the most widely-tracked index of world stocks up for a ninth straight day and sailing past the 500 point barrier. As Sonia Legg reports, oil prices also largely held on to gains after posting the biggest rise in six weeks a day earlier, buoyed partly by moves by Saudi Arabia's crown prince to tighten his grip on power.