Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
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
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Scientists in Germany have developed a candy that doesn't cause cavities.
11
Iron weighs more after it rusts.
68
Cold water weighs more than hot water.
93
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38