A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Balsa wood is classified as a hard wood!
41
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
In zero gravity, a candle's flame is round and blue.
16
A cubic yard of air weighs about 2 pounds at sea level.
31