Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Aluminum used to be more valuable than gold!
84
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Pumice is the only rock that floats on water.
14
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9