Your voice sounds different from what you hear. This is because one can hear a sound in two different ways. The first is through vibrating sound waves hitting your ear drum, the way other people hear your voice. The second way is through vibrations inside your skull, set off by your vocal chords.

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The first cologne was invented in Germany in 1709.

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Cold showers improve brain function.

Regularly taking cold or contrast showers benefits your thinking abilities, improves your memory and increases productivity.

In addition, such morning showers invigorate.

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The white part of your eye is called the sclera. It is made of tough, strong tissue that keeps your eye’s shape and protects everything inside. The sclera has very few nerves, so touching it lightly usually does not hurt. The front part of your eye, the cornea, is very different. It has many nerve endings, making it extremely sensitive. Even a tiny touch to the cornea can cause pain or make your eyes blink.
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In Tokyo, the working day lasts 11-15 hours.

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The prey has a horizontal shape of the pupil to better scan the horizon. The predator is vertical to better focus on prey.

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Smoking breaks down the protein elastin It is responsible for the elasticity of the skin, which causes women's breasts to sag faster.

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"Textaphrenia" is thinking a text message has arrived when it hasn't. "Textiety" refers to the anxious feeling one gets from not receiving or sending text messages.

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To make a bruise go away, eat pineapple and papaya. They contain a digestive enzyme called bromelain that breaks down the proteins that can trap blood and fluids in your tissues. Eat as much pineapple as you want to flush away the bruise.

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If a guide dog without an owner comes up to you on the street, it means that the owner is in trouble somewhere nearby and needs help. Remember this, and one day you might save someone's life.

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One fugu fish contains enough poison to kill 30 people and there is no antidote.

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The tallest sandcastle ever built was in Blokhus, Denmark, and measured 21.16 meters (69 feet, 5 inches) tall.

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One electric eel can generate enough electricity to start approximately 50 cars.

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An unusual phenomenon for the whole world but familiar to Australia is the spider season, which begins in June.

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🐭 Rats can laugh too

The rat is the only mammal other than humans that can laugh.

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The most expensive baby pacifier in the world costs $85,000.

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Children under one year old should not be given honey, as it can cause infant botulism.

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North Korea does not use the normal Gregorian calendar like most of the world. Instead it uses a different calendar system called the Juche calendar for numbering the years and year one of this calendar began on Kim Il Sung’s (The founder of North Korea) birthday.

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