The longest operation in the world lasted 103 hours and was performed by 20 doctors. It was the separation of conjoined twins in Singapore in 2001.

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Traveling is good for mental health, and it also reduces the risk of heart attack and depression.

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About 21% of android users use a smartphone with a broken screen.

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You lose heat 20 times faster when wet than dry. Remove wet clothes and dry them before wearing. Wool stays warm even when wet and is best for cold weather. Always carry wool clothing in cold places. 🧥❄️

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Kākāpō is a species of large, flightless, ground-dwelling parrots that look like owls. Also known as owl parrot, Kākāpō has a large grey beak, finely blotched yellow and green plumage, short legs, large feet, and short tail and wings. They are the heaviest parrots in the world and have a reported lifespan of up to 100 years.

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"Cheat Your Stomach"

In the forests of India grows a plant called kalir kanda, locally known as "cheat your stomach. After eating 1-2 leaves, one feels full for a whole week, even though there are no nutrients in the leaves.

Not bad for people who want to lose weight.

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The most expensive book ever sold is Leonardo da Vinci’s "Codex Leicester." It was bought by Bill Gates in 1994 for $30.8 million. The book is a collection of Leonardo’s scientific writings and drawings. 📚💰

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Caffeine doesn’t create energy, it just delays fatigue.

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Doing things that scare you will make you happier.

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Orgasms can lower a woman's risk of heart disease, stroke, breast cancer, and depression.

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Nowadays the average high school kid today has the same level of anxiety as the average psychiatric patient in the early 1950's.

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A fantastically rare photo of a weasel flying on top of a woodpecker.

The woodpecker seems to be in shock. The photo was taken by British amateur photographer Martin Le-May in a park in east London.

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In France, it's illegal to publish photographs of handcuffed suspects until they've been convicted.

Doing so before a conviction is a threat to personal dignity; as they would appear to be guilty anyway.

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Sea otters will hold hands while they're sleeping, so they don't drift apart.

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Alligators rarely suffer from infections because they have robust immune systems

Their blood is effective against 23 strains of bacteria, and can even destroy a significant amount of HIV.

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Reindeers are so well-adapted to the Arctic winter, they are more likely to overheat than freeze in the cold.

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In Germany, trees are numbered.

This is done in order to keep a list of the trees in the forest. The list contains all the information about the tree: age, condition, species. This is necessary to take proper care of the trees and to prevent them from falling down.

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If you suffer from micturition syncope, you faint while urinating or immediately after urinating.

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The first traffic light was installed on December 10, 1868, in London near the British Parliament building.

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