We’re all different, and yet a few of us have rare features that occur in only a few percent of people. Today, we're going to tell you about some of them. Some are just nice physical features, but there are those Superman himself would envy. For example, there's a genetic condition that allows you to sleep much less than other people and not regret it at all. Better yet, there are no known side effects to it, so it’s an all-around win.

Or imagine falling from the roof of a ten-story building and getting away with a few bruises and scratches but no broken bones whatsoever! Such a genetic anomaly was discovered back in 1994. It makes a person’s bones about eight times denser than normal, which basically makes them indestructible. What’s even better is that the feature seems to be hereditary — it means he could pass it down to his kids. And they’ll become unbreakable too! Isn't it cool? So, here are some really exceptional physical skills and characteristics found in only a tiny percentage of people around the world.

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As soon as we've decided we know everything about famous sights of the world - if not in person, then thanks to the Internet - we learn there are more secrets to find that aren't known to the general public. Did you know, for example, that when Gustave Eiffel was designing his famous tower in Paris, he added a secret apartment for himself right on top of it? Visitors to the third level can now take a glimpse of the apartment through a small window.

Or have you ever heard of secret apartments in the New York public libraries? They’re meant for the library superintendents and their families. They used to live, cook meals, take showers, and do other regular things in the Schwarzman Building on 5th Avenue. They also had a cool bonus of walking the library rooms at night. So let's take a tour around some of the world's greatest sights and take a look at what else they have to offer that doesn't meet the eye at once.

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Are you a science fiction fan? I have some good news for you, then! Turns out that flying cars may be closer to us than we think. We’ll need other means of transportation in the future to be able to cope with a large number of vehicles. And while manufacturers are working on that, let's learn some cool facts about already-existing cars.

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How to get rid of your lower belly pooch? Are you familiar with the situation when you want to put on some item of clothing hanging in the back of your closet, but something holds you back from it? Your belly! This problem can be solved. If you wanna know how to do it just watch our new video!

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Both of these animals live in the water. Other than that, there's little in common between them. A smaller one is a warm-blooded mammal, highly intelligent, and curious. Its long, streamlined body is usually either blue or gray, but there are also brown and even pink species. Ranging in size from 6 to 30 ft long, dolphins don't weigh more than 11 tons. Their slippery hairless skin - that feels rubbery to the touch - is probably their most famous feature.

The other animal is a notorious pre-historic predator. Growing about 60 ft long, it weighed almost 5 times more than the largest dolphin. Its size, huge serrated teeth, and incredible speed - that's what made the meg the most feared creature in the ocean 23 to 3 and a half million years ago. So, the question is: who would you rather meet while swimming in the ocean, a dolphin or a megalodon? In comparison with the sharp-toothed monster, dolphins look cute and totally harmless. But is it really? Who would win, a shark or a dolphin?

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Both of these animals live in the water. Other than that, there's little in common between them. A smaller one is a warm-blooded mammal, highly intelligent, and curious. Its long, streamlined body is usually either blue or gray, but there are also brown and even pink species. Ranging in size from 6 to 30 ft long, dolphins don't weigh more than 11 tons. Their slippery hairless skin - that feels rubbery to the touch - is probably their most famous feature.

The other animal is a notorious pre-historic predator. Growing about 60 ft long, it weighed almost 5 times more than the largest dolphin. Its size, huge serrated teeth, and incredible speed - that's what made the meg the most feared creature in the ocean 23 to 3 and a half million years ago. So, the question is: who would you rather meet while swimming in the ocean, a dolphin or a megalodon? In comparison with the sharp-toothed monster, dolphins look cute and totally harmless. But is it really? Who would win, a shark or a dolphin?

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Purple skies might seem gorgeous, but sometimes they appear for scary reasons - they can be caused by hurricanes, wildfires, or dust storms. The concentration of vapor in the air increases, and the light scatters more than usual. Green skies might look just as spectacular as purple ones, but they actually also scream danger! They're usually there to tell you a thunderstorm, hailstorm, or tornado is somewhere nearby. Let's explore some other signs of natural disasters to look out for.

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You'd think we've studied the Universe pretty well by far, but it's actually full of mysteries yet to be discovered. 22 and 2023 have been landmark years for discovering new, fascinating worlds. Last year, NASA surpassed 5,000 confirmed exoplanets. There are rocky super-Earths, gas giants like Jupiter, "ice giants" like Neptune, and so on. And this is just the beginning. There might be more than a trillion exoplanets in our galaxy alone!

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Time traveler, stock your backpack with your favorite hygiene essentials because we’re living in the best time ever for cleanliness! Don’t forget your toothpaste! Some ancient civilizations used a mixture of gum Arabic and soot to keep their teeth clean. That, or a mix of the salt, mint, iris flower, and pepper. One dentist tried this combo to see how it works. Let’s just say, didn’t feel good on the gums!

About 5,000 years ago, people in Egypt and Greece would fray a small twig to clean in between their teeth. A few centuries later, soap appeared! It was a mix of boiled fat and ash. In such hot climates, people would wash their bodies up to 4 times a day, using soda ash to get rid of dirt. And Romans are better known for their public restrooms. To make “clean-up” easier, the Romans would fix a sponge at the end of a stick. By the way, they'd share that thing amongst themselves! Let's find out more about what hygiene was like in the past. How did the ancients clean themselves?

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Do you have trouble falling asleep or often wake up in the middle of the night because of nightmares? There are some simple tips you can try to improve the quality and quantity of your sleep. If you experience nightmares from time to time, make sure you don’t eat cheese before you go to sleep. Eating breakfast for dinner is really helpful for those who want to fall asleep faster. If you feel cold whenever you sleep, no matter how heavy your duvet is, also called a comforter or quilt, try layering.

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