Population Counter for Mac

From Jon Brown Designs:

This widget simply calculates the population of the world. It takes into consideration death rates and birth rates. Its a fun widget to watch the population of the earth increase! There is, of course, no totally accurate account of total world population. No one is continually recording every single birth and death. Nevertheless, it is possible to make estimates based on various census figures and rates of growth in various countries. The figure above is of net births minus deaths, and is based on estimates provided by the U.S. Census Bureau of a total population of 6,451,058,790 in mid-2005, currently increasing at a rate of 1.15% per year, or 2.37 people per second.