Tears that are shed for different reasons, such as sadness, happiness, or onions, actually have different chemical compositions.

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The American secret service tried to spike Hitler's food with female hormones to feminize and make him less aggressive.

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Sweat is actually odourless

The smell is caused by bacteria that live on the skin.

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Bananas are the only fruit that even babies are not allergic to.

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Cheetahs are so shy and socially awkward that zoos sometimes pair them with 'emotional support' dogs.

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The teeth of mice are so strong that they can chew through concrete.

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Not making your bed can be safer than making it. Unmade beds expose dust mites to fresh air and light, dehydrating them and reducing the number of allergens in your bed.

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In Denmark, citizens have to select baby names from a list of 7,000 government-approved names.

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Abbiocco (Italian): That sleepy feeling you get after a big meal.

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Scientists have found that mint gum helps relieve fatigue.

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A group of zebras is called a "dazzle."

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The number 5 is pronounced 'ha' in Thai so "555" is slang for "hahaha."

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Potatoes can reflect wireless Internet signals.

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There are people who have no sense of fear at all.

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There are more than 200 million insects for every human on Earth.

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India overtakes China in population

India's population in 2022: 1,415,000,000 people.

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Earth is the only known planet where fire can burn

No other planets have enough oxygen.

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It wasn't until 2018 that women in Saudi Arabia were allowed to obtain a car license.

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Blue is believed to symbolize loyalty, which is why most countries have blue police uniforms.

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In the 16th and 17th centuries in the country of Turkey, anyone caught drinking coffee was put to death.

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Girls spend about five years on makeup.

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