It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
A ball of glass will bounce higher than a ball made of rubber.
73
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Nylon is made from coal and petroleum.
42
There is a surgical implant being developed that will give you an orgasm at the touch of a button.
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
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
A single speck of dust is half way in size between a subatomic particle and the Earth.
15