The smell of freshly cut grass is actually a plant distress call.
31
One cubic foot of gold weighs more than 1,200 pounds!
78
Scientists aren't sure what color dinosaurs were.
312
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Nylon is made from coal and petroleum.
42
According to studies, men change their minds two to three times more often than women.
72
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