The smell of freshly cut grass is actually a plant distress call.
31
In zero gravity, a candle's flame is round and blue.
16
Balsa wood is classified as a hard wood!
41
The sun is 330,330 times larger than the earth.
75
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
One third of the electricity produced on earth is used to power electric light bulbs!
75
Iron weighs more after it rusts.
16
Sound at the right vibration can bore holes through a solid object.
134