It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
According to Harris Interactive, 70% of men and 57% of women shower daily.
75
Identical twins do not have identical fingerprints.
79
City dwellers have longer, thicker, denser nose hairs than country folks do.
48
Approximately 365 million people in the world have computers while half of the world's 6.5 billion population has never seen or used a telephone.
75
Men laugh longer, louder, and more often than women.
61
