The world's shortest man measures only 21.5 inches.
73
‘Old people smell’ is actually caused by a chemical, 2-nonenal, that old people secrete through their skin
8
About 3000 years ago, most Egyptians died by the time they were 30!
18
You can only remember 4 things at a time.
31
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11