Why and how we got to be 7 billion people? We explained in a video, short but enlightening through colored glasses of water, representing every continent, deaths and births.
He explains that in 1800 were approximately one billion people, but over time the technology, medicine, and all advances made by the human species, have the potential to extend life expectancy. While it is true that over time fewer fertilizations that does not mean that the world's population will continue growing in coming years.
What is the problem that at the end of this century we are 10 billion people? Have we run out of food, energy and any of the resources we have now, like water? In the video the conclusion is that, but we will not be as dramatic, but we must take into account climate change .
