According to the World Resources Institute (WRI), urban populations in the developing world are growing at 3.5 percent per year, compared to less than 1 percent growth rates in developed world cities.
UN-Habitat says that a staggering 95 percent of the expected global population growth we will see over the next 2 decades will be absorbed by cities in the developing world.
What that means is by 2030 another 2 billion people from the developing world will be living in cities (only 100 million from the developed world meanwhile will be doing the same). Currently 75 percent of world's poorest people -- 1 billion -- live in cities.
Higher density, lower standards
Whether the new wave of migrants will find a better life in cities remains to be seen. More than 70 percent of city dwellers in the developing world (that's around 900 million people) live in slum-like conditions, according to the World Health Organization (WHO).
And that number is predicted to more than double to reach 2 billion slum-dwellers by 2020.
The health risks for people living in slum-like conditions will come from every corner and will include increased mortality rates from heat waves; higher risk of exposure to flash floods, mudslides and landfalls; and more frequent exposure to waterborne and infectious diseases (notably dengue fever).
When it comes to poor cities, bigger is by no means always better. According to UN Habitat, the mega-cities of the future, (those with more than 10 million residents) will be "giant potential flood and disaster traps" if insufficient action is taken on behalf of their residents.
Already, 75 percent of the world's 21 mega-cities are based in the developing world, and by some estimates, 27 of the 33 mega-cities expected to exist by 2015 will be in developing countries.
Reflection and Opinion:
This article written by Rachel Oliver about overpopulation and the effects it will have over time was very informative. I was also unaware that all 21 mega cities hold seventy percent of the world's city dwellers that live in slum-like conditions. All of these people are prone to disease and increase the worlds mortality rate. These people are living in "giant potential flood and disaster traps." They are also emitting up to eighty percent of the earth's carbon dioxide each year. If more people were to move out of these mega cities and into more rural areas, it would make a surprisingly significant difference.
Questions:
1) Why do you think this major concern is not brought to closer attention?
2) How does that last sentence impact you personally? Why?
3) Do you agree that in this case, bigger is not better when it comes to mega cities?
4) Were you aware of the effect these cities and living conditions have on our Earth?