One cubic foot of gold weighs more than 1,200 pounds!
78
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
One barrel of petroleum holds 42 gallons.
20
In zero gravity, a candle's flame is round and blue.
16
Scientists aren't sure what color dinosaurs were.
312
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
The smell of freshly cut grass is actually a plant distress call.
31