Roughly a quarter of the world's people live in China.
50
According to the American Society for Microbiology, 90% of women and 75% of men wash their hands after using a public restroom.
170
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
City dwellers have longer, thicker, denser nose hairs than country folks do.
48
Studies show that the risk of a “secret love” being revealed heightens romantic feelings for the partners, thanks to increased levels of phenylethylamine (PEA).
99
About 2/3 of American men prefer boxers to briefs.
83
Females learn to talk earlier, use sentences earlier, and learn to read more quickly than males.
119
Women rate men more attractive if other women are looking and smiling at him.
17