HOW AN AGEING POPULATION WILL CHANGE THE WORLD - BBC NEWSby BBC News 5 years ago
Subscribe to BBC News www.youtube.com/bbcnews
Check out our website: http://www.bbc.com/news
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.