Diamonds can be shattered with a hammer.
-104
Most dust particles in your house are made from dead skin!
67
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15