The bark of an older redwood tree is fireproof.
65
Galalith is a type of plastic that can be made from milk. It is odourless, insoluble in water, biodegradable, anti-allergenic, antistatic, and virtually non-flammable.
1
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Pumice is the only rock that floats on water.
14
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 left ear is more responsive to words of love and emotion whispered into it than the right.
40
Iron weighs more after it rusts.
68
In the 60s, a scientist gave LSD to dolphins in an attempt to teach them English.
17