Mushrooms are more closely related to humans than they are to plants.
47
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
Your thumb is about the same size as your nose.
124
All 13 minerals necessary for human life can be found in alcohol beverages.
282
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
94
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Only humans shed emotional tears.
331
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89