bbc, Population, united nations
The world at seven billion

The UN is set to announce that the population of the planet has now reached seven billion people. But will this number continue to rise in future years - and if so, what could this mean? The BBC's Fergus Walsh crunches the numbers to find out.

Link: http://www.bbc.co.uk/news/world-15445092
Added by View user profileNadia Afrin on October 26, 2011