If the chemical sodium is dropped into water it will immediately and violently explode.
67
One cubic foot of gold weighs more than 1,200 pounds!
78
Nylon is made from coal and petroleum.
42
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
German chemists made a replica of a trophy the size of one molecule.
68
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21