A chance of a woman having twins is increased after the age of 35. About 1 in 27 women will give birth to twins after this age. After 50 the chances of having twins is 1 in 9.
51
Only 2% of the Earth's population are natural redheads.
13
Only 10-20% of the population can wiggle their ears and raise one eyebrow.
22
Babies that are breastfed are more likely to be slimmer as adults than those that are not breastfed.
110
Awarding people money for doing well in IQ tests causes them to score better, $10 increased people's score by an average of more than 20 IQ points. IQ tests don’t just measure intelligence - they also measure effort.
9
Children's sense of smell is better than adults'.
860
The average person laughs 13 times a day!
108
A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
10