To boost alertness after a power nap (a 20-minute Stage 2 nap), sleep researchers suggest drinking caffeine before a nap. Caffeine requires 20–30 minutes to take effect, so it will kick in just as you’re waking.

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In Georgia it is impossible to find not a single plastic bag, because they are banned there.

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A person undergoes a complete renewal every 7 years.

The human body is constantly in motion: shedding and regrowing skin, renewing lungs, growing new hair.

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One of the most incredible bills in terms of denomination was in Hungary. Because of the huge number of zeros, the number was stated in words.

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Victoria Falls is one of the most famous waterfalls in the world, attracting thousands of tourists annually.

Its width is a whopping 1700 meters.

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Masouleh is a village in Iran where the streets are above the houses.

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World's most endangered language has only one person left alive who can fluently speak.

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Eating instant noodles two or more times a week is associated with cardiometabolic syndrome, which raises a person’s likelihood of developing heart disease and other conditions, such as diabetes and stroke. 

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In New Zealand, fruit trees are intentionally planted in public spaces like sidewalks and parks so anyone can pick fresh food for free.

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Two rivers (the Rhone and the Arva) merge into one in Geneva

The two rivers are fed by different glaciers and have different minerals in their composition, creating different colors of water and density.

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The human brain generates about 12-25 watts of electricity, enough to power a low-wattage LED light bulb. This electrical activity is produced by the firing of neurons, which communicate with each other through electrical impulses. Despite its relatively low power output compared to other organs, the brain’s electrical activity is essential for controlling all bodily functions, thoughts, and behaviors.

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The name of the Apple voice assistant Siri is a Norwegian female name.

• It means "Beautiful woman leading you to victory."

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At least 4 billion people in the world wear glasses, and 75% of the world's adult population uses some form of vision correction.

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This is the last white giraffe.

A GPS tracker has been attached to it to constantly protect it from poachers.

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The reason why we hate the recorded sound of our voice is because our skull changes the resonance of our voice from within and creates more bass. When we hear a digital recording of our voice, although slightly unfamiliar to ourselves, it’s exactly how other people hear it.

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🐦‍⬛️ The common swift holds a number of unique records in the bird world.

The bird can stay in the air without landing for 2-3 years, during which time it eats, drinks, mates, and covers a distance of up to 500,000 kilometers.

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Cristiano Ronaldo's full name is Cristiano Ronaldo dos Santos Aveiro. And Ronaldo is not a surname, but a middle name. His athlete was given in honor of the former US president and actor Ronald Reagan, whose fan was Cristiano's father.

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The baby pictured is Emma Gibson. Emma was frozen as an embryo back in 1992, but wasn't born until 2017 to a mother who was born in 1991.

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Nissan cars when shown in advertisements often have the number 23, because in Japanese, two is "ni" and three is "san."

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The word "school" originally emerged in Ancient Greece and meant "leisure, relaxation."

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