Unless you have been living under a rock someplace you already know that the world is in the midst of a population explosion. The number of human beings on this planet has increased alarmingly. So too are the worries from government officials all around the world about how much of a strain that is going to take on the planet's food and water resources, which are already strained in some areas. Just how quickly has the world's population increased? Here is a small chart that tracks the progress over the last two hundred years:1805 - The World reaches 1 billion human inhabitants.
1927 - 2 billion reached.
1960 - 3 billion
1974 - 4 billion
1987 - 5 billion
1999 - 6 billion
2011 - 7 billion
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