Pure water (H2O) does not conduct electricity on its own.
46
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
At 15 years old, Jack Andraka invented a method of diagnosing pancreatic cancer, thus helping to save the lives of millions of people around the world. It is 168 times faster, 26,000 times cheaper, 400 times more sensitive, and has a 99% success rate.
15
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
One cubic foot of gold weighs more than 1,200 pounds!
78
Pumice is the only rock that floats on water.
14
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
A cubic yard of air weighs about 2 pounds at sea level.
31