Diamonds can be shattered with a hammer.
-104
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
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 ragweed plant can release as many as one billion grains of pollen!
51
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
One cubic foot of gold weighs more than 1,200 pounds!
78
4.5 pounds of sunlight strike the Earth each day.
27