Iron weighs more after it rusts.
16
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
A ball of glass will bounce higher than a ball made of rubber.
73
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 in Germany have developed a candy that doesn't cause cavities.
11
One 75-watt bulb gives more light than three 25-watt bulbs.
57
The bark of an older redwood tree is fireproof.
65