[Stu from NYC]

Originally Posted by MartinSE

The population has come up in a few posts lately, and I recalled having a few stats from research I have been doing for a book I am writing.

I thought these might be interesting to some.

There is NO point, there is NO agenda. Just some information. And it will be interesting to see how long before this gets locked - LOL!

Population

* It took from 300,000 BC until 1800 AD for the world population to reach one billion

* The second billion took 130 years (1930)

* The third billion in 30 years (1960)

* The fourth billion in 15 years (1974)

* The fifth billion in 13 years (1987)

* The sixth billion in 12 years (1999)

* The seventh billion in 12 years (2011)

* During the 20th century, the population of the world grew from 1.65 billion to 6 billion

* In 1970, there were roughly half as many people in the world as there are now


(note, this is two years out of date - for my purposes, that is unimportant.)

Interesting. When people realize that they do not need to have a dozen kids in order to have just a couple survive to adult hood they will stop having so many. When everyone does this population will grow but only from longevity.