A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
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
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Scientists aren't sure what color dinosaurs were.
312
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21