Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
One barrel of petroleum holds 42 gallons.
20
The storage capacity of human brain exceeds 4 Terrabytes.
140
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
The average home creates more pollution than does the average car.
33
Pure water (H2O) does not conduct electricity on its own.
46