There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
20
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
A hard working adult sweats up to 4 gallons per day.
39
Every human spent about half an hour as a single cell.
144
A person swallows approximately 295 times while eating dinner.
63
On average women can hear better than men.
170
Males sweat 40% more than females.
104