The smell of freshly cut grass is actually a plant distress call.
31
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
One cubic foot of gold weighs more than 1,200 pounds!
78
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42