Powerful blast rocks Chinese port city, two dead

An explosion so powerful it was heard several kilometres away killed two people and injured over 30 in China's port city of Ningbo on Sunday while toppling several disused buildings, authorities and residents said, but there was no word as to the cause.Local authorities said two people died and two were seriously injured, while state media said more than 30 people were treated in hospitals in Ningbo, just south of Shanghai and one of China's largest ports.Authorities on Sunday night still had no