Today, Monday, October 21, 2011, it is estimated that the world has reached the 7 Billion mark for our population. There are some sites that illustrate this and its implications. One is from NPR that has a nice video on how population growth has occurred. They also have a site that discusses what the typical person looks like now. This site provides a link to find out what number you are in the world’s population. I was 2,705,245,262nd alive on earth. The Washington Post has done in-depth reporting on this topic especially on the graying of the worlds population.