These days, any cruise ship is like a huge city, where every detail is thought out so that passengers feel just as comfortable as on land, only better. You can take a shower, do the laundry, or swim in a pool. But where does all the dirty water go? The average ship spends about 40-50 gallons of water per passenger every day. It makes tons of wastewater that needs to be utilized. Say, the world's biggest cruise ship, Harmony of the Seas, can carry about 5,500 passengers together with 2,300 crew members. They produce about 312,000 gallons of wastewater daily!

What's the most dangerous sting in the world? A giant bee, a cobra, black widow or a scorpion? All of these stings will be stressful but a doctor will help you out and you'll recover. But there's a sting you'll hardly forget and won't fully recover after. It's good to know what it is and never have to face it in real life. It's a sting of the most dangerous plant in the world. It grows in Australia and has a pretty funny name: Gympie-Gympie. It can be easily confused with nettle or burdock. And this plant is covered with a thin layer of fluff on its leaves. But don't fall into this trap and touch the fluff - it's extremely toxic! One man said he felt pain for two years after touching the plant. Let's find out more about it!

Breaking news: human technology has touched the Sun! Wow! How's that for a breakthrough? Parker Solar Probe was launched in 2018 to explore the Sun and travelled closer to the scorching-hot giant than any spacecraft before. NASA spacecraft entered the solar atmosphere, making it the first time a piece of human technology touched the Sun. What else did the spacecraft find out? Did it uncover any mysteries of the Sun? By the way, researchers are expecting another approaches in 2022. There're even plans for the probe to make a fly-by around Venus. It'll gain more speed and approach the Sun at a record close distance. I'll make sure to tell you all about it!

You look at a picture of a teenager from other decade and he or she looks different from high schoolers you see now. Why does it happen? Is it really because people grew up quicker back then? Or we age later now? Let's get this question answered and see what the perception of style has to do with it. I made a list of these 16 facts most people don’t know or think about. Your friends will definitely be surprised when you share them! The world is full of curiosities we hardly pay attention to. Are you ready to be impressed?

What if there were no planes? Well, you wouldn't be able to visit your friends and relatives who live in other countries or even on other continents as often as you'd like to. Okay, it's obvious. But do you know that without airplanes, there wouldn't be such a great variety of flowers in flower stores? You would mostly see local plants - nothing too exotic. Because, for example, about 80% of flowers sold in the UK come from the Netherlands! But the Netherlands, in turn, has flowers delivered by air from Ethiopia, Kenya, and other countries. Or have you ever wondered what would tourism would be like without airplanes? Lots of people would travel inside their home countries and traveling abroad would become something really memorable. Could we live without flights?

13 Clear Traits of a Psychopath (Spot Them). In this video we're going to cover the 13 signs to help you spot a psychopath. You'll learn about psychopathy signs you probably never expected. Psychopaths are some of the most dangerous people in the world, yet, they often go unrecognized in society. We might have the stereotypical image of a serial killer or head of a violent mob when we imagine psychopaths, but they’re often blended in with the rest of us. In fact, they usually use their charm and lies to make themselves appear even more wholesome and pure than their peers. Unfortunately, it’s after they’ve gained our trust that they begin to do the most damage.

If you like to enjoy a big glass of milk every day, then your body is more unique than you thought! Only 30% of people can drink milk, while the other 70% can't digest it. Even more puzzling: your body loses its ability to process milk as you age. So if you used to drink it just fine but milk's giving you problems now, know that you're in the majority! There are plenty of other awesome human body facts to go with that. Like that humans cannot multitask! So if you're struggling to juggle several tasks at once, don't be alarmed, it's just how your brain is wired! What about some rare body features only a tiny percentage of people have? Can you touch your nose with your tongue or breathe in through your nose while talking? There aren't many of such superhumans among us. Find out if you're one of the rarest!

Are you afraid of insects? Or maybe you just find them creepy and dislike them? Imagine some of the insects getting bigger than humans! Huge cockroaches, massive spiders and enormous millipedes. What a nightmare... And it turns out, it could be reality in the past. Researchers in England have found fossils of the largest millipede to have ever lived. These giant creatures were the length of a car and likely roamed Earth millions of years ago. But if millipedes used to be that big, could they grow back in size now? Just think about it... What if the world suddenly became invaded by giant insects?

Have you ever thought about how many wonderful processes are going on inside your body: how the blood flows, how neurons are formed, what your bones consist of... Your bones are some of the greatest structures in your body. You have over 200 bones in your body. And if you ever wonder what makes you grow, the bones are part of the answer. In this video we're going on a journey inside the bone marrow. We'll find out why it's so important and what it looks like. We'll travel through the skeletal system and visit every tiniest part of it.

Imagine a friend of yours has Birthday and you only have $1 to get a perfect gift. What could it be? You might say it's impossible to get anything a person might like for $1. But here're 10 last minute gift ideas that you can get for someone important and they'd definitely like it! Get a notebook and get ready to write them down. From fortune cookies to cute stickers and a real pet. Be creative! Even if you have only $1 in your pocket, you can still make a cool present for someone who matters! What's really important is the desire to express your attention, love and care.

The most creative Hollywood minds couldn't think up a sci-fi creature as unusual as the common octopus. They have 9 brains, 3 hearts, blue blood, and no bones! But the real question is: why?

How do hand sanitizers work? Let’s see what sanitizer normally contains. The first and most important ingredient is alcohol to help tear off that fatty coating any bacteria have. When a germ gets in contact with alcohol, its coat bursts off and it can no longer cause you any harm since it’s not active anymore. To make the sanitizer truly effective, the alcohol should be at least 60%, then it’ll finish off almost all the germs around you. But if water were not available, could hand sanitizers be a good alternative? How about looking to the hypothetical future of the planet Earth? So, the world’s not that different – most things that were so common in the 21st century still exist in the 22nd. Turns out there’s only one major change, and it’s water supply. It all started with field irrigation using energy drinks, and even though it wasn’t a success, they had another idea. Now they want to replace all the water in the supply system with hand sanitizer...

How to be more productive? Did you know you only use 10% of your brain? Well sorry, that’s not true. People use almost 100% of it almost all the time. So what’s holding you back? Why can’t we learn languages faster, multiply big numbers in our head or understand Quantum Physics? Maybe, because of all the limitations we humans put on ourselves. Have you ever said to yourself: “I’m not smart enough to solve that math problem” Or “I’m not good enough to get into that college”? As soon as you say those kinds of things, you’re programming yourself to fail. Every single one of us is capable of doing anything we set our mind to. A lot of your limitations are in your head, you don’t really know what you’re capable of. Your brain is like a super computer. It does what you tell it to do.