Residents of Canton, Missouri, help to sandbag the levee on the north side of town along the Mississippi River June 17, 2008. Volunteers piled sandbags on strained levees in Iowa holding back the surging Mississippi River on Tuesday as the worst Midwest flooding in 15 years ruined cropland and continued to drive up world food prices. REUTERS/Frank Polich (UNITED STATES)
REUTERS/FRANK POLICH, STR