Intelligent people have more zinc and copper in their hair.
233
The Japanese commonly put ketchup on their rice.
16
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
Boys who have unusual first names are more likely to have mental problems than boys with conventional names. Girls don't seem to have this problem.
131
Babies that are breastfed are more likely to be slimmer as adults than those that are not breastfed.
110
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
The offspring of two sets of identical twins are legally cousins but genetically siblings.
63