World Population Clocks
The National Geographic have produced some excellent visual diagrams on world population here. Make sure you check out the zoomable human face.
Although several population clocks already show us as being at 7 billion people many show us as still to reach this figure by the end of 2011. A list of fairly decent population counters and clocks follows
- US Census Bureau clock
- IBIBLIO– Allows you to enter an exact date so the algorithm can calculate the actual population
- World Clocks and Productive Land
- Interactive Maths allows you to change the date
- Poowaddle – Graphical look at several interesting geographical statistics although a bit too advertising heavy