Most dust particles in your house come from dead skin.
48
One barrel of petroleum holds 42 gallons.
20
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Indoor pollution is 10 times more toxic than outdoor pollution.
62
The force of a suction cup is calculated using F=AP.
15