Society:World Population
By 2000 the population is expected to reach almost six billion. Every second three people are added to the world's population. At this rate， the world's population could double over the next fifty years. And on a global scale the population changes as a result of the difference between births and deaths. So why is the population growing? How is it changing? And what does all this mean for the future?
- Added：2006
- Country：Australia
- Duration：27
- Time of update：2011/8/15 11:59:12