Blonde hair is not exclusive to Europeans. Melanesians of the south Pacific evolved a different gene for blonde hair.
7
‘Old people smell’ is actually caused by a chemical, 2-nonenal, that old people secrete through their skin
8
Up to the age of six or seven months a child can breathe and swallow at the same time. An adult cannot do this.
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Karl Pillemer, a professor, performed a study on thousands of elderly people and what advice they had about life. On happiness, there was a consensus: “the elders viewed happiness as a choice, not the result of how life treats you.”
13
Women rate men more attractive if other women are looking and smiling at him.
17
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
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