An average healthy man's lungs has enough surface area to cover a tennis court.
Your nose can remember 50,000 different smells.
Human bones, ounce for ounce, are stronger than steel.
All the bacteria in one body collectively weigh 4 pounds.
Everyday, your heart creates enough energy to drive a truck for 20 miles (32 km).
Within three days of death, the enzymes that digested your dinner begin to eat you.
The chemicals that make up a human body are roughly worth 160 USD.
Without your pinky finger, your hand would lose about 50% of it's strength.
A healthy human liver costs 157,000 USD.
In 2010, a Southwest Airlines employee discovered dozens of human heads in a cargo hold of a plane.