Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Galalith is a type of plastic that can be made from milk. It is odourless, insoluble in water, biodegradable, anti-allergenic, antistatic, and virtually non-flammable.
1
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The average home creates more pollution than does the average car.
33
One barrel of petroleum holds 42 gallons.
20
According to studies, men change their minds two to three times more often than women.
72
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101