Interesting real facts

• No piece of normal-size paper can be folded in half more than 7 times.
  
• Blueberry juice boosts memory
• When cats are happy or pleased, they squeeze their eyes shut
• The elephant is the only animal with 4 knees
• Every human spent about half an hour as a single cell
• Each year, about 500,000 detectable earthquakes occur in the world. About 100,000 of those can be felt and about 100 of them cause damage.
• The tongue is the only body muscle that is attached from one end only. (Please don't send me corrections to add the penis; the penis is not a muscle).
• We, as humans, forget 90% of our dreams
• During thinking, we use on about 35% of our brains
• The percentage of people dreaming in black and white started decreasing after the spread of color TV
• Approximately two-thirds of people tip their head to the right when they kiss
• Just days before the World Cup of 1966 in England, the trophy was stolen and then later retrieved by a dog
• Some Chinese believe that swinging the arms cures headaches
• Coffee drinkers have more sex than non-coffee drinkers. They also enjoy it more.
• The city of Portland in Oregon was named after a coin toss in 1844. Heads for Portland and tails for Boston. 
• A queen bee lays 1500 eggs a day
• No president of the United States was an only child for his parents
• Laughter is a proven way to lose weight
• Pumice is the only rock that floats in water
• The African cicada fly spends 17 years sleeping, then wakes up for two weeks, mates and then die.
• The vibrator was originally used as a medicinal treatment for female "hysteria" during the 19th century
• Reno, Nevada has the highest rate of alcoholism in the U.S., Provo, Utah, the lowest.
• The Declaration of Independence was written on hemp paper. Hemp doesn't contain THC and won't make you high.
• In ancient Rome, when a man testified in court he would swear on his testicles
• 80% of all pictures on the internet are of naked women
• 250 to 300 million cell phones are being used in the U.S.