KNOWLEDGE TO GAIN

I hope 2020 will be good for me! 😊

Lacking a sense of humor might not just be bad for your social life, it might also be harming your cardiovascular health. A new study shows that laughter actually increases blood flow in the body, proving right the old adage that laughter is the best medicine, at least when it comes to the heart. LAUGHING Cardiologist Michael Miller and colleagues at the University of Maryland tested blood flow in 20 healthy men and women after they watched 15-to-30-minute clips of the comedy movies Kingpin and There's Something About Mary and a stressful film, the opening sequence of Saving Private Ryan. The researchers measured blood flow both before each viewing and one minute after it ended. "We wanted to see whether laughter induced a vascular response," Miller explains. Prior research inspired the team to conduct the experiment. A series of questionnaires administered to sufferers of coronary heart disease by the cardiologists revealed that patients who had suffered a heart attack f

Horses first lived in the wild where their flight-or-fight instinct became very strong. As a result, sleeping standing up enabled the horse to flee quickly when danger was sensed. Lying down to sleep significantly reduced the horse's ability to run away fast. Do horses ever lie down and sleep? Yes! In fact, many horses prefer to sleep lying down than standing up simply because it is much more comfortable. It is not uncommon to see a herd of horses, many of them lying down, but with at least one standing up. The standing horse is keeping watch over the others, keeping eye on any potential predators or other signs of danger. HORSE When a horse is sleeping while standing they are not in a deep sleep, but are in a lighter sleep or snoozing. However, like humans, horses do need to have REM or rapid eye movement sleep that occurs during deep sleep. Also like humans, horses engage in slow-wave sleep (also known as SWS). To do this, the horse must lie down, not just with its legs tucked un

Coconuts falling from their tree and striking individuals cause serious injury to the back, neck, shoulders and head. They can potentially be fatal. Following a 1984 study on "Injuries Due to Falling Coconuts", exaggerated claims spread concerning the number of deaths by falling coconuts. Falling coconuts, according to urban legend, kill a few people a year. This legend gained momentum after the 2002 work of a noted expert on shark attacks was characterized as saying that falling coconuts kill 150 people each year worldwide. This statistic has often been contrasted with the number of shark-caused deaths per year, which is around five. Concern about the risk of fatality due to gravity's pull on coconuts led local officials in Queensland, Australia to remove coconut trees from beaches in 2002. One newspaper dubbed coconuts "the killer fruit." Historical reports of actual death by coconut nonetheless date back to the 1770s. Coconuts also played a lethal role in the

Crocodiles really do produce tears. Because, while eating, they swallow too much air, which gets in touch with lachrymal glands (glands that produce tears) and forces tears to flow. But it is not actually crying. The term "crocodile tears" (and equivalents in many other languages) refers to a false, insincere display of emotion, such as a hypocrite crying fake tears of grief. The term is derived from an ancient anecdote that crocodiles weep in order to lure their prey, or that they cry for the victims they are eating, first told in the Bibliotheca by Photios I, who was the Ecumenical Patriarch of Constantinople. This tale was first spread widely in English in the stories of the Travels of Sir John Mandeville in the 14th century and appears in several of William Shakespeare's plays. crocodile eye

A good night's sleep is vital for every human being to survive. Given that an average a person sleeps for 8 hours in a day, that means that an average person will sleep for 229,961 hours in their lifetime or basically one third of their life. If a person lives, say, 75 years, that's 25 years asleep, or 9,125 days. That's precious time which could have been spent watching Die Hard 105,325 times. sleeping woman

During any given minute, there are more than a thousand thunderstorms around the Earth causing some 6,000 flashes of lightning. Every minute! #lighting #fact #wallpaper thunder

Of the more than 500 or so shark species, about 80% grow to less than 1.6 m and are unable to hurt people or rarely encounter people. Only 32 species have been documented in biting humans, and an additional 36 species are considered potentially dangerous. Almost any shark 1.8 m or longer is a potential danger, but three species have been identified repeatedly in fatal bites: great whites, tigers, and bull sharks. All three are found worldwide, reach large sizes and eat large prey such as marine mammals or sea turtles. More bites on swimmers, free divers, scuba divers, surfers and boats have been reported for the great white shark than for any other species. However, some 80% of all shark bites probably occur in the tropics and subtropics, where other shark species dominate and great white sharks are relatively rare. ocean An estimated 50-80% of all life on earth is found under the ocean surface and the oceans contain 99% of the living space on the planet. Less than 10% of that space ha

We can say that the strawberries and lemons are the world's healthiest foods. Both these fruits contain low amount of sugar that is helpful, as our body needs a certain amount of sugar. A lemon contains 70% sugar and strawberry contain only 40% of sugar.🤨 The reason that the lemon tastes sour even having more sugar than the strawberry is that the lemon contains a high amount of citric acid, usually 3% to 6%, that dominated the sweet taste of the lemon and results in the sour taste. The strawberry has less sugar than lemon but there is no acid content present in the strawberry, and therefore it tastes sweet. People may think that high amount of sugar in a lemon may cause obesity, but a lemon has many medicinal properties. Also, strawberries contain a high amount of carbohydrates in the form of starch, but it also has many health benefits. If we keep aside low amount of sugar that is present in both the fruits and just evaluate their nutritive values, we will find that the health be

Saltwater washes (saline lavage or irrigation) help keep the nasal passages open by washing out thick or dried mucus. They can also help improve the function of cilia that help clear the sinuses. This can help prevent the spread of infection to the other sinuses and reduce post-nasal drip. It also can make the nose feel more comfortable by keeping the mucous membranes moist. You can buy saline nose drops at a pharmacy, or you can make your own saline solution: Add 1 cup (250 mL) distilled water to a clean container. If you use tap water, boil it first to sterilize it, and then let it cool until it is lukewarm. Add ½ teaspoon (2.5 g) salt to the water. Add ½ teaspoon (2.5 g) baking soda. You can store homemade saline solution at room temperature for 3 days. To use homemade saline solution as a nasal wash: Fill a large medical syringe, squeeze bottle, or nasal cleansing pot (such as a Neti Pot) with the saline solution, insert the tip into your nostril, and squeeze gently. Aim the stream

They looked identical and even shared the same name, but the two prisoners pictured were actually different people and their remarkable case helped bring in the era of fingerprint identification. The man ont he left was called Will West, the man on the right William West, and they were both sentenced to jail at Leavenworth Penitentiary in Kansas over 100 years ago. The arrival of Will West in 1903 caused the records clerk at the prison considerable confusion, because he was convinced he'd processed him two years previously. The clerk, M.W. McClaughry, asked Will West if he'd ever been to the prison before. West said he hadn't. McClaughry then set about taking his Bertillon measurements – named after the French policeman Alphonse Bertillon – which was the usual method of identifying people and involved recording the dimensions of key physical features. McClaughry, still convinced the man before him had already been to the prison, looked up his name in his filing system and f

The two largest deserts on Earth are in the polar areas. The Antarctic Polar Desert covers the continent of Antarctica and has a size of about 5.5 million square miles. The second-largest desert is the Arctic Polar Desert. It extends over parts of Alaska, Canada, Greenland, Iceland, Norway, Sweden, Finland, and Russia. It has a surface area of about 5.4 million square miles.

Whether you hail from Surbiton, Ulan Bator or Nairobi, your genetic make-up is strikingly similar to that of every other person on Earth, an analysis concludes today. Although scientists have long recognised that, despite physical differences, all human populations are genetically similar, the new work concludes that populations from different parts of the world share even more genetic similarities than previously assumed. All humans are 99.9 per cent identical and, of that tiny 0.1 per cent difference, 94 per cent of the variation is among individuals from the same populations and only six per cent between individuals from different populations. Nonetheless, the team found that tiny differences in DNA can provide enough information to identify the geographic ancestry of individual men and women. The results of the study, published today in the journal Science, have implications for understanding ancient human migrations and for resolving an ongoing debate about the use of family histo

What's Hiding In The Dark Web? When you look at the sky, what do you see? A blazing sun, a band of clouds, an occasional airplane. It doesn't look like much, but you know there's more than meets the eye. Beyond your infinitesimal view of the universe are entire galaxies that stretch further than you could ever imagine. And that's why our colossal universe is a fitting metaphor for the World Wide Web. Both are constantly expanding and changing — and completely misunderstood. No matter how much probing we do, we'll never fully grasp what's out there. So, before we explore those outer reaches of cyberspace, let's start at ground zero: the origin of the internet. A Brief History Of The World Wide Web Before the internet, there was the ARPANET, a computer network used by the US government to share sensitive data in the 1970s. About a decade later, the ARPANET's limited networks gave way to a single, worldwide network we call the internet. However, the interne

10 Of The Most Disturbing And Weird Science Experiments Ever Conducted Real life science stories are sometimes scarier and weirder than Frankenstein. No matter how absurd and meaningless they sound, scientists did actually try to create animals that glow in the dark, and they even tried to stick two dog heads together. Here are 10 of those bizarre cases in the history of science. 10. The Cat Telephone Two scientists, Ernest Glen Wever and Charles W. Bray, conducted an experiment to turn a cat into a telephone in 1929. They first extracted a piece of the cat's skull, then placed an electrode on the animal's hearing nerves. These electrodes were connected to an amplifier with cables 59 feet (18 meters) long. Thus, a sound coming to the ear of the cat would be heard in the room where the amplifier was located. The result was successful. “Speech was transmitted with great fidelity. Simple commands, counting, and the like were easily received. Indeed, under good conditions