China on Tuesday marked the first anniversary of a devastating earthquake that left nearly 90,000 dead or missing one year ago in mountainous Sichuan province. In the city of Dujiangyan, a moment of silence was held amid the ruins of collapsed buildings and debris. Mourners placed flowers at a memorial to quake rescue efforts, sang the national anthem and a stone carving of a clock that stopped at 2:28, when the temblor hit, with the date underneath
