Only about 2% of the world population has green eyes.
36
Yawns are more contagious among people with closer relationships.
163
44% of kids watch television before they go to sleep.
106
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
Most people smile when they are frustrated, according to a study.
15