The bark of an older redwood tree is fireproof.
65
The only letter not appearing on the Periodic Table is the letter "J".
180
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The force of a suction cup is calculated using F=AP.
15
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
Aluminum used to be more valuable than gold!
84
In zero gravity, a candle's flame is round and blue.
16
Sound travels fifteen times faster through steel than through air.
134