WOODBURY - The death toll is rising in the wake of revelations that copies of the Muslim holy book were burned at a U.S. military base in Afghanistan.The unrest began Tuesday, when Afghan workers at the Bagram air base noticed that copies of the Quran and other Islamic texts were in the trash that coalition troops dumped into a pit of burning garbage. Muslims believe that the Quran is the direct word of God and burning copies of it is considered an outrageous offense.The incident has sparked days of protests and at least 20 people, including two U.S. soldiers, have been killed, officials say. Furious demonstrators have burned the American flag. President Barack Obama's apologies have done little to quiet the growing international outrage.