If the chemical sodium is dropped into water it will immediately and violently explode.
67
The bark of an older redwood tree is fireproof.
65
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Iron weighs more after it rusts.
16
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
The smell of freshly cut grass is actually a plant distress call.
31
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39