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Global population hits 8 billion

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The world’s population has reached eight billion people, the United Nations has said, warning of more hardship in store for regions already facing resource scarcity because of climate change.

The UN attributes the growth to human development, with people living longer thanks to improvements in public health, nutrition, personal hygiene and medicine.

It is also the result of higher fertility rates, particularly in the world's poorest countries — most of which are in sub-Saharan Africa — putting their development goals at risk.

Middle-income countries, mainly in Asia, accounted for most of that growth, gaining some 700 million people since 2011.

India added about 180 million people and is set to surpass China as the world’s most populous nation next year.

The global population has increased eightfold since 1800, from an estimated one billion to eight billion, largely due to the development of modern medicine and the industrialization of agriculture, which boosted global food supplies.

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Global population hits 8 billion

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