It is impossible to suck your own elbow.
If a man tried to open the jaws of an alligator, it would be the same as trying to lift the jeep without a jack.
One day on the Moon lasts for 700 hours, or nearly 30 Earth days.
The Subjects of Louis IX the King of France were branded with a hot iron as a sign of loyalty.
The Islamic masters were the first to paint paper and often would apply dots of silver or gold on it.
A group of researchers from Lausanne (Switzerland) found that there are genes that determine the quality of sleep. It was thus proven that insomnia, as well as good sleep, can be hereditary.
