From another post:
"The population is growing at a rate of 1.5 million per week. To put that number in perspective, in order to house all those people in a single place you'd need to build a city the size of Phoenix each and every week, or a city the size of New York every 5 weeks. Before the end of next month, the world's population will have increased by more than the current population of Sweden. Before the end of the year, it will have increased by more than the current population of the UK. Before the end of 2013, it will have increased by more than the current population of the US."
>>The West is responsible for about 80% of the worlds CO2 increase. An average person living in Great Britain will in only 11 days emit as much CO2 as an average person in Bangladesh will during a whole year. And just a single power plant in West Yorkshire in Great Britain will produce more CO2 every year than all the 139 million people combined living in Uganda, Kenya, Tanzania, Malawi, Zambia and Mozambique.<<
But these are (rapidly) developing countries and it would a mistake to assume that their emissions will not increase substantially over the coming years.
Population increase in undoubtedly one of the most serious challenges - possibly the most serious challenge - facing the planet.