Scientists in Germany have developed a candy that doesn't cause cavities.
11
In zero gravity, a candle's flame is round and blue.
16
One barrel of petroleum holds 42 gallons.
20
Iron weighs more after it rusts.
68
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
Aluminum used to be more valuable than gold!
84