Home     Contact     Projects     Experiments     Circuits     Theory     BLOG     PIC Tutorials     Time for Science     RSS     Terms of services     Privacy policy  
   
 Home      Projects     Experiments     Circuits     Theory     BLOG     PIC Tutorials     Time for Science   


<< Back to INDEX

How the Earth's population became 7 billion? Where will it end? [History]
posted June 18 2012 19:59.07 by Giorgos Lazaridis




Just two centuries ago, Earth's population was less than a billion. In fact, the population became one billion in 1804. The rate of birth was nearly the same as the rate of deaths. But then, better agricultural and better medicine caused the rate of deaths to be decreased.

From that point, the population began to increase exponentially due to the higher life expectancy for children. The population was doubled within 130 years and doubled again within another 50 years, reaching the limit of 4 billions in 1975. It took only another 10 years to increase yet another billion. In 1999 the global population was 6 billion. From 2011 the population is 7 billion and it is still increasing.

So, where will it end? Or better, will it ever end? Of course it will. Actually, U.N forecasts that the world population will reach the maximum limit of 10.1 billions by the year 2100, and then it will begin to decline.

It is not simple to get the exact numbers since a slight change in fertility rates could mean a population of 15 billions instead of 10 by the end of the century.

The following film is produced by Adam Cole. Maggie Starbard made the cinematography.




[Link: npr]
 
Share



You might also like...


This is how much (or little) water exists on, in and above Earth [Science]

Free energy from Quantum Vacuum got a big NO-NO

Using video to reinvent education [Ideas]

Schools can crush the children's ingenuity [Psychology]

Problems are simpler to solve backwards [Lifehacks]

How this horn-shaped speaker amplifies the sound passively?

Trinity was the code name of the first nuclear explosion test [Random Knowledge #33]

What Happens if Your Body is Exposed to the Vacuum of Space? [Space]


<< Back to INDEX



Comments

  Name

  Email (shall not be published)

  Website

Notify me of new posts via email


Write your comments below:
BEFORE you post a comment:You are welcome to comment for corrections and suggestions on this page. But if you have questions please use the forum instead to post it. Thank you.


      

  • At 19 June 2012, 3:05:46 user Gary wrote:   [reply @ Gary]
    • The only way it will level out is if our resources run out - in which case life will NOT be worth living for those remaining.

      The UN has been totally discredited over it's global warming hoax, over population is by far and away the world's greatest threat and the UN is trying to cover that up because the solution is not palatable to them.

      Third world countries are NOT going to stop having babies - period.












     Contact     Forum     Projects     Experiments     Circuits     Theory     BLOG     PIC Tutorials     Time for Science     RSS   

    Site design: Giorgos Lazaridis
    © Copyright 2008
    Please read the Terms of services and the Privacy policy