The world's population will grow by a billion people in the next 13 years and will be almost 10billion by the time we reach 2050, the United Nations predicts.
The current population of 7.6billion is expected to balloon in the coming decade, driven largely by high birth rates in Africa, according to a new UN report.
India will surpass China as the most crowded inside the next seven years, while Nigeria will overtake the United States and become the world's third most populous country shortly before 2050, research suggests.
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