Hydra' comes from the Greek word 'Hydra', meaning 'water snake'. Therefore, biologists use it to classify a water-based species with characteristic tentacles at the end of a tube-like body. Apart from this, the English dictionary also incorporates the phrase 'hydra-headed.' The phrase refers to a difficult situation with multiple aspects to consider. The phrase is derived from the mythical monster slain by Heracles as part of his labors to atone for the sin of killing his wife and child due to his stepmother's insanity.

Known as ambergris, the excrement of sperm whales, which is rumoured to be a by-product of the whale trying to digest indigestible items, used to be very popular in perfumes. It has a sweet smell once it ages, which is why it is used in perfumes even now. But since it led to the hunting of sperm whales, it is now made synthetically.

Klecksography—the technique of creating pictures using inkblots—was a popular children's game in the late nineteenth century. In general, the game entailed pouring ink onto paper, flipping it over, and seeing what pictures appeared. Rorschach, who worked in a Swiss asylum, wondered if patients might read these inkblots differently based on pathology, and he had some success with this. That prompted him to start employing his own custom-made, abstract, symmetrical drawings to elicit mental responses from his participants. Rorschach felt that by doing so, he could delve deeper into a patient's psyche than written psychological exams permitted.

The record for the loudest purr by a domestic cat is currently held by Merlin, a black and white cat from Torquay, UK. His purr is 67.8db(A) and for context, this is nearly the same volume as a shower! Most cats purr at around 25db.

Flying kites without wind is difficult in the open air. However, at the Windless Kite Festival, kites can be flown indoors even if there is no wind. Every year, this festival takes place on the Longbeach Peninsula.

According to a 2019 poll of 1,132 menopausal women conducted by Newson Health Clinic, 76% of their companies did not provide any type of menopause assistance, despite the fact that over 90% of respondents felt that their symptoms were negatively impacting their job.

If it ain't broke, don't fix it, as the saying goes, and this proved to be true for a very early design of the mousetrap. Colin Pullinger unveiled his Perpetual Mousetrap in the mid-1800s, claiming that it would last a lifetime. Pullinger could still make that claim more than a century later.Even without bait, the 155-year-old device on display at England's Museum of English Rural Life caught a mouse that snuck into it in 2016. In an attempt to build a nest, the mouse entered the trap and activated the see-saw mechanism. Unfortunately, the rodent did not make it. The perpetual mousetrap, on the other hand, clearly does!

According to reports, the Vatican consumes more wine per capita than any other country on the planet. The typical Vatican citizen consumes 74 litres of wine per year, which is more than double the consumption of the wine-producing countries of France and Italy. There are several causes for their increased wine drinking. Vatican inhabitants prefer to eat in bigger groups, and the city's lone grocery offers wine duty free, resulting in increased consumption.

Jorhat is a major city and district in upper Assam. It is widely referred to as the ‘Tea Capital of India’. It was the last capital of the Ahom dynasty and is home to some of the oldest historical monuments of Assam. Jorhat produces large quantities of tea which is exported to different countries.

The relationship between spirituality and religion can be complicated. There are so many different religions today, and some of them have similar beliefs about God or an afterlife. Anyone can enjoy and benefit from spiritual practices, regardless of their religious beliefs (or lack thereof). The relationship between spirituality and religion is that religion is (hopefully) spiritual, but spirituality is not a religion (defined as a set of rules or dogma).

The Trans-Siberian Railway crosses 3,901 bridges on a one-way trip. The Trans-Siberian Railway is not only Russia's longest railroad but also the world's longest. During the seven-day journey, passengers pass through eight different time zones and cross 3,901 bridges.

Changes to the screenplay came in so late, according to Matthew Wood, sound editor on The Rise of Skywalker, that he had to visit the house of Adam Driver, who played villain Kylo Ren throughout the last trilogy, to record him delivering a few new and crucial lines in a pretty low-tech setting. "I ended up opening one of his closets where he kept all of his suits, and I simply shoved the suits out of the way and said, 'put your head in here,'" Wood explained on The Week's SoundWorks Collection podcast.

Did you know? Insects are the only invertebrates with wings.

Sir Ratan Tata, the most beloved carmaker, was the first Indian to purchase an automobile. Jamshedji Tata used to drive a 2000cc Bugatti. However, the first automobile to arrive in India belonged to British officer Mr. Foster of Crompton Greaves. By 1897, he had purchased an automobile. Simultaneously, Jamshedji Tata became the first Indian to acquire an automobile.

According to Alzheimer's Orange County, "as the size and proportion of the U.S. population 65 and older continue to expand, the number of Americans with Alzheimer's disease and other dementias will climb each year." The number of persons with Alzheimer's and other dementias is predicted to increase by more than 40% from 2015 to 7.1 million by 2025. With an estimated 13.8 million, this will almost triple by 2050.

Aliens may inhabit one out of every 37 to one out of every 70 sun-like stars. These discoveries alone suggest that there are billions of planets in our galaxy that potentially support life.

That's over 3 feet per year! This is because it was created thousands of years ago on a lake. Today, the lake is part of Mexico Metropolis's aquifer system, and water demand is so high that the city is sinking.

Boys, in general, require motivation to learn. If you're having trouble motivating your son, try connecting learning to his interests. They may learn to play a musical instrument if they know they can play in a band, or they may practise kicking if they see it will help them score more goals. If they enjoy skateboarding, chances are they want to learn more about it, so use this as a motivator if reading is a challenge for them.

Tisanes are 'teas' made with no Camellia Sinensis plant leaves. Peppermint tea, chamomile tea, rooibos tea, hibiscus tea, lemon verbena tea, and other teas are examples. The vast majority, if not all, are caffeine-free! A fun fact: caffeine is still present in decaffeinated coffee in small amounts, averaging around 3%. Caffeine is extracted from green beans using the swiss water method, carbon dioxide method, methylene chloride method, or ethyl acetate method while they are still green (pre-roast).

People found this extremely frustrating because round pencils frequently rolled off surfaces. As a result, the popular hexagonal pencil shape was introduced. People used to use breadcrumbs to erase their mistakes before erasers were invented.

Chemosensory hairs on the legs and feet detect food. Small antennae in front of their eyes are employed to track for food from a distance. "If you watch a lobster in a tank in a market, you'll notice that they're flipping about, looking for food, dissolved chemicals in the water," Bayer explains.

Fennel seeds are high in potassium, which controls the quantity of fluid in the circulation. It aids in the regulation of your heart rate and blood pressure. According to the published research, fennel seeds raise the level of nitrite in the saliva. Nitrite is a naturally occurring substance that regulates blood pressure.

One of the few fruits with balanced potassium-to-sodium content is the custard apple. It aids in controlling and regulating the body's fluctuations in blood pressure. The fruit's high magnesium content relaxes the smooth heart muscles, reducing the risk of heart attack and stroke. Additionally, the fruit contains fibre and niacin, which support the body's ability to lower bad cholesterol while raising good cholesterol.