One 75-watt bulb gives more light than three 25-watt bulbs.
57
The force of a suction cup is calculated using F=AP.
15
Iron weighs more after it rusts.
16
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Most dust particles in your house are made from dead skin!
67
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
German chemists made a replica of a trophy the size of one molecule.
68