Mushrooms are more closely related to humans than they are to plants.
47
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
Our brains have a negativity bias and will remember bad memories more than good ones.
15
Enamel is hardest substance in the human body.
61
Gorillas can catch human colds and other illnesses.
205
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
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
The largest cell in the human body is the female egg and the smallest is the male sperm.
682