In zero gravity, a candle's flame is round and blue.
16
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
Most dust particles in your house come from dead skin.
48
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Billions of neutrinos pass unnoticed through your body every second.
6
Aluminum used to be more valuable than gold!
84
Most dust particles in your house are made from dead skin!
67
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17