Cold water weighs more than hot water.
93
Aluminum used to be more valuable than gold!
84
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
Indoor pollution is 10 times more toxic than outdoor pollution.
62
The only letter not appearing on the Periodic Table is the letter "J".
180
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
A cubic yard of air weighs about 2 pounds at sea level.
31