Crumbling edifice of the UN By Susannah Price BBC United Nations correspondent The landmark United Nations headquarters in New York was state of the art when it was built more than 50 years ago. Impressive from the outside... Its gleaming marble and glass tower, a familiar sight overlooking the East River, is a popular tourist destination where visitors gaze at the impressive General Assembly and Security Council chambers. Behind the scenes, it is a different story. The plumbing, electrical, heating and cooling systems also date back half a century and have gone well beyond their useful life. The UN is...