Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
One barrel of petroleum holds 42 gallons.
20
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Iron weighs more after it rusts.
68
A ball of glass will bounce higher than a ball made of rubber.
73
Out of all the senses, smell is most closely linked to memory.
146