Several Ukrainian villages are at risk from a giant poisonous cloud that formed after a train carrying a toxic chemical caught fire and derailed. Ukraine's Deputy Prime Minister Oleksandr Kuzmuk compared the accident to the blast at the Chernobyl nuclear reactor in 1986. "A disaster has happened. After the Chernobyl catastrophe we are dealing with a case that can pose a real threat for our people," the Associated Press news agency quotes Mr Kuzmuk as saying. "It is an extraordinary event, the consequences of which cannot be predicted." While hundreds of villagers have been evacuated, those who remain in the area have been advised to stay indoors and avoid eating vegetables or animal produce sourced locally. The dig link : http://digg.com/world_news/Poison_threat_from_Ukraine_train