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In 1979 China's Communist Party implemented the “One-Child Policy” to slow the country’s population growth.

The policy was lifted in 2015, yet the effects of 36 years of strict population control will be felt for years to come. Today there are about 7.6 workers for every person over 65 in China. By 2050, fully 40 percent of the population could be over that age and the country is projected to have 100 million people 80 and over.

On this edition of Global Journalist, a look at the emerging consequences of China's mass population control experiment.


Crystal Davis/World Resources Institute / Flickr

Overpopulation has been debated since British economist Thomas Malthus famously warned in 1798 that humans could reproduce far faster than they could increase their food supply.

But since Malthus's time, world population has grown from 800 million to 7.5 billion today. Yet worries about overpopulation are back. In part that's because lots more people are on the way, complicating efforts to deal with problems like climate change and water scarcity.

The UN forecasts that in the near future the world will add about 83 million people annually. By 2100, world population will grow to 11.2 billion.

On this edition of Global Journalist: a look at the growth of human population and the debate about its risks.