Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
The average home creates more pollution than does the average car.
33
No matter how cold it gets, gasoline will not freeze.
107
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
Cold water weighs more than hot water.
93