suso writes ""The estimated population of the world will pass 6,666,666,666 today. No doubt an interesting number for people everywhere (not referring to any religion connotations). 5,555,555,555 was passed about 14 years ago. You may not realize that only 80 years ago, the population of the Earth was only around 2 billion. This shows how the population of the world has increased at an alarming rate in recent times, although the growth rate is almost half what it was at its peak in 1963, when it was 2.2%. Unrelated but also an interesting coincidence, the estimated number of available IPv4 addresses is getting very close to 666,666,666. It should cross over today as well.""