Brass doorknobs automatically disinfect themselves in about 8 hours.
18
The storage capacity of human brain exceeds 4 Terrabytes.
140
Out of all the senses, smell is most closely linked to memory.
146
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
The earth is approx. 6,588,000,000,000,000,000 tons.
175
A ball of glass will bounce higher than a ball made of rubber.
73
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