Population Growth

One of the main environmental problems that arises this century is the exponential growth in population. Each and every second that passes there are 4.1 births and 1.5 deaths. Birth rate subtract death rate (BR-DR) you get 2.6 births added to our population every second. This table illustrates birth rate on a time scale:
 

Time Frame:	1 second	1 minute	1 hour	1 day	1 week	1 year	1 decade
Births:	2.6	156	9360	224640	1572480	82049760	820497600

What are your reactions to these statistics?
 

Graph 1.0 Worldwide Exponential Growth.

Currently we have roughly 6.2 billion people on the earth. The world population has more than doubled in the past 49 years. From 2.5 billion in 1950 to 6.2 billion today. Every 12 years we add a billion to the population. Unless death rates rise, it may reach 8 billion by 2025. Some scientists estimate that 6 billion is the perfect carrying capacity for human beings to sustain life and have enough resources to go around on earth. While other sceptics pointed on that 2.1 billion is the perfect size. To imagine how population can affect us all, just think in another 25 years, the population that is now currently in New York will be added on top of the population of California.

Current trend of exponential growth in population	Goal of having a stabilized population where BR=DR

What is a possible solution for over-population?
Right now the average total fertility rate world-wide (how many babies a women has over a period of her lifetime) is 3.0. To sustain the 6 billion that we presently have on earth, we must lower this number down to 2.1. So for every 10 women, one can have 3 babies. Less develop countries are at a rate of 3.4, but needs to be lowered down to 2.3. United States is currently at 1.9, therefore it is in pretty good shape.