The World Bank chief warned on Tuesday that 100 million people have already been pushed into poverty due to a man-made food crisis while as many as two billion are on the verge of disaster. “This is not a natural disaster,” said Robert B. Zoellick, president of the World Bank. “Make no mistake; there is nothing natural about this. But for millions of people it is a disaster.” He noted that hunger and malnutrition were already the underlying causes of death of over 3.5 million children every year, robbing the future potential of many millions more.