In this handout photo provided by Liberia’s Ministry of Agriculture, army worms feed on plant leaves in Pelelei in Bong County, Liberia Friday, Jan. 16, 2009. Liberia’s president declared a state of emergency Monday, Jan. 26, 2009 over an invasion of crop-eating caterpillars that has affected 350,000 people in the West African country. (Liberian Ministry of Agriculture, HO)