The puddle under the slide at the Tam Hung Kindergarten is inky black. A security guard says the staff has to sweep coal dust off the playground every morning. Parents whose children have developed persistent coughs blame the school’s new neighbor: a huge coal-fueled power plant built by Chinese engineers with Chinese aid. The plant is one of a pair that have begun operating in the past five years in this village near the Vietnamese port city of Haiphong. A Shanghai firm completed work on a third plant this year by the old border that separated north from south during the Vietnam War. And another major plant financed by Chinese loans is under […]