In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
Iron weighs more after it rusts.
68
The most expensive material on the planet is antimatter - worth $62.5 trillion per gram.
18
Hot water can freeze faster than cold water.
181
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117