Climate change: rising to the challenges in Africa - by Dr Moses Amweelo ...
New Era, Namibia
According to the latest United Nations Population Division report, we, Homo sapiens or modern man originated 200 000 years ago and up to 1776 the population of the world was barely 0.79 billion and has since experienced 860 percent growth between 1750 and 2008, from 0.79 billion to 6.7 billion.
... (5 February 2010)