Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Iron weighs more after it rusts.
16
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
The force of a suction cup is calculated using F=AP.
15
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
Sound at the right vibration can bore holes through a solid object.
134
In zero gravity, a candle's flame is round and blue.
16