i’m reading a micheal crichton book from 1969 and he mentioned that there were 3 billion people on earth, so i was curious to see what it currently was. At this moment there are more than 6.5 billion people! More than double 40 years ago.

Anyway, what’s nuts is if you check out this link, and press refresh ever few seconds:

http://www.census.gov/ipc/www/popclockworld.html