If the chemical sodium is dropped into water it will immediately and violently explode.
67
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Scientists in Germany have developed a candy that doesn't cause cavities.
11
One barrel of petroleum holds 42 gallons.
20
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17