Babies' eyes do not produce tears until the baby is approximately six to eight weeks old.
58
If you're over 100 years old, there's an 80% chance you're a woman.
143
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
Roughly a quarter of the world's people live in China.
50
The world's shortest man measures only 21.5 inches.
73
The Japanese commonly put ketchup on their rice.
16
