That’s the number of us who will be living on earth at the end of 2011.
The 7 billionth of us will be born next October (approximately)
In a globalized world a demographic challenge anywhere is a demographic challenge everywhere.
Developing country will have problems to give food and water to youth and developed ones to supply revenues to retirees.
Balance is the reasonable solution, don’t you think?
(note: a Billion is one followed by nine zeroes (ie a thousand million)