Dioxin, a persistent chemical linked to cancer, birth defects and other disabilities, has seeped into Vietnam's
soils and watersheds, creating a lasting war legacy that remains a
thorny issue between the former foes. Washington has been slow to
respond, but on Aug. 8 the U.S. for the first time will begin cleaning up dioxin from Agent Orange that was stored at the former military base, now part of Danang's airport.