Out of all the senses, smell is most closely linked to memory.
146
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
One ragweed plant can release as many as one billion grains of pollen!
51
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
