In the Philippines, the death toll in two powerful quakes that struck the southern part of the country in the past week has risen to 21. <br />'' <br />'' The 6.6-magnitude and 6.5-magnitude quakes hit the island of Mindanao two days apart, destroying buildings and displacing tens of thousands of residents.<br />'' <br />'' The national disaster council said, rescuers found more bodies, many crushed by falling debris and landslides caused by the violent shaking.<br />''