Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41
Iron weighs more after it rusts.
68
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
In zero gravity, a candle's flame is round and blue.
16
According to studies, men change their minds two to three times more often than women.
72
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0