Out of all the senses, smell is most closely linked to memory.
146
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Iron weighs more after it rusts.
68
Hot water can freeze faster than cold water.
181
Sound at the right vibration can bore holes through a solid object.
134
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118