Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
No matter how cold it gets, gasoline will not freeze.
107
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Cold water weighs more than hot water.
93
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5