Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Indoor pollution is 10 times more toxic than outdoor pollution.
62
A cesium atom in an atomic clock beats over nine billion times a second.
43
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
In zero gravity, a candle's flame is round and blue.
16
Nylon is made from coal and petroleum.
42
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117