Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
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
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
The storage capacity of human brain exceeds 4 Terrabytes.
140