In 1804, the world population stood at 1 billion. Today, it’s more or less 7 billion. How did the population grow so big in 200 years? With the better medicine and agriculture practices improved, more people began living long enough to have families of their own. But this infographic video from NPR does a superb job of telling the story, using glasses of colored liquid to visualize births (water drips into the glass) and deaths (it escapes through the bottom).
"As higher standards of living and better health care are reaching more parts of the world, the rates of fertility — and population growth — have started to slow down, though the population will continue to grow for the foreseeable future.
U.N. forecasts suggest the world population could hit a peak of 10.1 billion by 2100 before beginning to decline. But exact numbers are hard to come by — just small variations in fertility rates could mean a population of 15 billion by the end of the century"
What are you thinking this? What are the situation to affect our economic and living on our earth?
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