HOW AN AGEING POPULATION WILL CHANGE THE WORLD - BBC NEWSby BBC News   4 years ago

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The number of people across the world over 65 years old will triple by 2050, drastically altering some countries' demographic make-up, according to a new report by the Pew Research Center.

The BBC's David Botti takes a look at the numbers in this week's edition of Face Facts.

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