A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
The human brain has the capacity to store everything that you experience.
4k
On average, there's 100 billion neurons in the human brain.
83
The human brain is more active during sleep than during the day.
28
The world's shortest man measures only 21.5 inches.
73
Enamel is hardest substance in the human body.
61
Only humans shed emotional tears.
331