When you see a cute dog in the street, your natural instinct is to pet it. But not dogs are safe to approach, and some are on duty, so you should not bother them. Dog owners came up with the color-coded bandana system to let you know whether you should keep your distance or you can go and say hello. A white bandana, for example, means that the dog either has a hearing or sight problem or is totally deaf or blind. Now, how about we take a look at the colors of the rainbow in a row?

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How to fall asleep fast? Everyone sometimes gets into a situation where falling asleep becomes really difficult. If you have anxiety or if you're stressed before an important event, falling asleep and staying asleep might be a problem. And it can be even more difficult to fall asleep before midnight when you used to stay up late. But there are some techniques that can help.

Did you know, for example, that the blue glow from the phone screen blocks the hormone melatonin, which reminds your body when it's time to sleep by making you feel tired? Stop using your phone at least an hour before bedtime. If you need to calm down your nerves to get some good rest, try to write your thoughts in a diary for 5 minutes before bedtime. These and some other methods will help you slide into the dream world of Morpheus.

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If you're a soccer fan, you probably know that the first FIFA World Cup game in history took place on July 13, 1930, in Uruguay. Only 13 countries decided to take part in the tournament, and they had to travel for days to reach South America. Did you know that Romanian King Karol II was such a huge soccer fan that he made it his first and biggest priority to get his national team to play at the FIFA World Cup? Qatar is set to host the first winter World Cup in history, and it's going to be the most expensive FIFA event ever. All stadiums will be fully air-conditioned, and the prize money for winners will be $42 million.

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FIFA trophy was initially named Victory and was a gold-plated sterling silver sculpture of the Greek goddess of victory Nike. The trophy was passed over from winner to winner until 1970. That year, Brazil won the World Cup for the third time and got to keep it. They would have never seen the original trophy but for a black-and-white mongrel named Pickles, who saved it a couple of years before. But that's not the end of the amazing stories that happened to the trophy.

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Just 40 years ago we had around 17 minutes to escape a burning building. Today, we’re down to 3 minutes, and that’s in the best case. Fire has become faster, and we have the furniture in our homes to blame. Nowadays, it’s made of synthetic materials that burn faster, hotter, and give off toxic gases (compared to the natural materials homes used to be filled with).

By the way, do you sleep with your bedroom door open or closed? The thing is that about half of home fires happen at night. If it ever happens to you while you’re sound asleep, a closed door could be a matter of survival! A closed door gives you back the precious time you need. It stops fire from spreading into your bedroom as fast, and you stay safe for a while. But still, you need to get out ASAP because the door can’t protect you forever. Let's find out how to stay safe during a house fire.

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Imagine you’re zipping through space, feeling like a futuristic superhero, when a shooting star passes by your side. But wait - is it really a star? Unfortunately, shooting stars are not stars at all. They are small space rocks, known as meteoroids, entering Earth’s atmosphere and creating a stunning light show. Let's debunk some other popular space myths we've all seen in movies.

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Outer space is full of rare things and phenomena that will always impress people. And astronomers turn up new surprises every day. Nuclear pasta, moon-moons, nebulas that resemble butterflies, and a star that looks eerily similar to the Eye of Sauron. There are a lot of strange objects in space. Have you ever heard of a planet where it rains glass or an ice planet that's burning?

Did you know that there are mini black holes? (Unlike their massive siblings, hypothetical mini black holes could be really tiny - not bigger than an atom). Or that about 4,000 light-years away from Earth, there's a planet that seems to be one enormous diamond? The planet is denser than any other discovered so far and consists mostly of carbon. Interested? Let's take a journey to the most amazing and bizarre places found in space!

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Every sound you hear comes to you in waves. They start from a vibrating object, like guitar strings, vocal cords, lightning shaking the air, and creating thunder! The number of waves that reach you in a second is the frequency. It’s measured in hertz. The more of those waves you sense, the better your hearing is. For example, octopuses can't hear at all, but they can still pick up vibrations of 400 - 1,000 Hz.  Elephants have a wide range: between 17 - 10,500 Hz. They can even hear the sound of approaching clouds! Humans have a typical range of 20 - 20,000 Hz – anything higher than that is considered ultrasonic. Where you stand will depend on your age. Cows hear almost 2 times better than humans do, sensing a range of 23 - 35,000 Hz! Btw, they say cows produce more milk when listening to classical music! So let's find out how different animals hear and who’s got the best hearing in the animal kingdom!

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How many hours does the average person sleep? We spend about one-third of our lives in bed. That’s around 33 years. But only 26 of them will be taken up by precious beauty sleep. The other 7 are spent on just trying to get to sleep. That’s not surprising considering nearly half of all people have sleeping problems. So, yes, you spend really big part of your life sleeping. But have you ever wondered how it compares to working, relaxing, or watching movies? We decided to figure out how much time we spend doing things in a lifetime. Did you know, for example, that you’ll probably spend nearly an entire year of your life just looking for your keys or glasses? Or that we spend more than 90% of our lives indoors? But I guess this could be good news for anyone who likes their home comforts. And while true love may last a lifetime, we only spend about a year of our lives doing romantic things! 

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Are you ready to see some of the scariest photos in human history? Well then, let's start with the photo showing fifteen females who were workers at a linen mill. If you take a good look at the photo, you'll see that there's an extra hand that doesn't belong to any of the ladies there. In our second photo, you'll see a young lady holding a glowing apparition between her hands – it might almost make it easy for you to believe that magic is real. Let's see what's the catch here.

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