The United States began a landmark project Thursday to clean up a dangerous chemical left from the defoliant Agent Orange — 50 years after American planes first sprayed it on Vietnam’s jungles to destroy enemy cover.
Aug. 9, 2013 U.S. Ambassador to Vietnam David Shear, second right, and Vietnam's Deputy Defense Minister Nguyen Chi Vinh, second left, attend a ceremony marking the start of a project to clean up dioxin left over from the Vietnam War, at a former U.S. military base in Danang, Vietnam. The United States and Vietnam on Thursday launched a four-year joint effort to clean up dioxin leftover from Agent Orange that was mixed, stored and loaded onto planes at the former U.S. military base, which is now part of Danang’s airport. Dioxin can linger in soils and at the bottom of lakes and rivers for generations, entering the food supply through the fat of fish and other animals. Maika Elan/AP