United Nations, December 9 : Stretching its previous attempts to predict the future, the United Nations said on Tuesday the world will be crowded with nine billion people when the year 2300 rolls around three centuries from now. In what it called a "groundbreaking" statistical achievement, the UN's population department said it was now able to make extended long-range predictions that easily beat earlier forecasts, which only went to 2150. The baby-makers of the future, however, will have to cooperate. According to the "medium fertility scenario," the rate of new births will be less than the death rate for around...