Blood constitutes approximately 7% to 8% of a person's total body weight. For instance, in an average adult weighing around 70 kilograms (154 pounds), their blood volume would typically be approximately 4.9 to 5.6 liters.

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🐬 Dolphins are born with whiskers, but they disappear as they age.

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The oldest map in the world, the Babylonian Map of the World, was created 2,600 years ago. Carved on a clay tablet, it shows the world as a flat disk with Babylon at the center. It’s like peering into the minds of ancient people!

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This stunning indoor rainbow is not created by sunlight. It is actually an artwork made by Gabriel Dawe, who used 60 miles of ordinary embroidery thread to create this ethereal and shimmery pattern that creates the optical illusion of a rainbow.

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🍍 If you salt the pineapple, it will be sweeter.

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Psychologists believe that swearing is one of the best ways to relieve stress.

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A Man blew a small hole in his throat by holding his nose and closing his mouth while sneezing. He was in a hospital for 2 weeks.

Doctors suggest you should always let a sneeze rip.

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The Irukandji jellyfish, a tiny creature measuring only a couple of centimeters, is highly venomous.

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A bottle of whiskey can be stored for 100 years without losing the taste of the drink.

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Emergency services in Canada are equipped with technology that can automatically change traffic lights signals.

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The condition of your shoes is the first thing that significantly impacts the impression you make when meeting someone.

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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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The modern American flag with 50 stars was invented and designed by 17-year-old high school student Robert Heft of Ohio. His teacher gave his design a B-minus, and said he would only raise his grade if Robert's flag was accepted as an official flag.

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Every day across Japan at 5 PM, loudspeakers play music.

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The Vatican and the Philippines are the only countries where divorce is prohibited by law.

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Mount Thor in Canada has the world's longest vertical drop. If you fell off it, you would fall for over a kilometer before you hit anything.

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🦜 African grey parrots can not only memorize around 1500 words but also understand their meaning.

They can also recognize shapes, colors, and even numbers.

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Actors who smoke on camera are more likely to smoke "herbal cigarettes" stuffed with lettuce or tea leaves instead of tobacco.

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In Japan, there are special umbrella stands on the streets, for when it starts raining. After the rain stops, you shall put the umbrella back at the nearest stand.

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Owls can't rotate their eyes, but they can perfectly rotate their heads 360 degrees

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