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Why is ice melting rapidly in Greenland?

Climate change experts have been speaking about the dangers posed by melting ice for some time now. A new study has now helped uncover a previously unseen way in which the ice and ocean interact. And the bad news? Based on their findings, the glaciologists suggest that even the climate change community has been vastly underestimating the extent of future sea-level rise that polar ice deterioration would cause.

Researchers at the University of California, Irvine and NASA’s Jet Propulsion Laboratory conducted a study of Petermann Glacier in north-west Greenland to come up with these findings.

Their results form the subject of a paper published in Proceedings of the National Academy of Sciences in May.

What is a grounding line?

A glacier’s grounding line corresponds to the place where ice detaches from the land bed and begins floating in the ocean. Based on satellite radar data from three European missions, the team of researchers learned that Petermann Glacier’s grounding line shifts considerably during tidal cycles. This, in effect, allows warm seawater to intrude and melt ice at an accelerated rate.

For ocean-reaching glaciers, the traditional view of grounding lines was that they did not migrate during tidal cycles and did not experience ice melt. This new study replaces that thinking with the newly gained knowledge. Warm ocean water intrudes beneath the ice and the melting rate is highest at the grounding zone.

Between 2016 and 2022, the Petermann Glaciers grounding line has retreated nearly 4 km. A 670-foot-tall cavity in the underside of the glacier was carved out by warm water.

More sensitive to warming The researchers’ paper stresses that the Greenland ice sheet has lost billions of tonnes of ice to the ocean in the last few decades. Most of the loss of ice is caused by warming of subsurface ocean waters, which is a result of our planet’s changing climate.

According to the researchers, the ice-ocean interactions make the glaciers more sensitive to ocean warming and these dynamics have so far not been included in predictive models. If we were to include them, projections of sea level rise would increase by up to 200% for all glaciers ending in the ocean, which includes most of northern Greenland and all of Antarctica.

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In which city was the world’s first public aquarium built in 1853?

On May 21, 1853, the first public aquarium was opened as part of the London Zoo. First called the "Fish House" in Regent's Park Zoological Gardens, it was made possible by English naturalist Philip Henry Gosse.

On any occasion when you’ve seen an aquarium, have you ever thought about how it came to be? No, not that particular aquarium that you visited or saw at someone's house. We are talking about the entire concept of aquariums as a vivarium of any size to house aquatic plants and animals.

The idea, in fact, is less than 200 years old. While a number of people were involved in the invention of the marine aquarium, English naturalist Philip Henry Gosse is credited with promoting the glass tank as a novel way of housing marine creatures. What's more, he was also responsible for using "aquarium" for this glass vessel, a term that still remains in use. 

Love for natural history

 Born in Worcester, England in 1810, Gosse was the son of Thomas and Hannah Gosse. Even as a boy, Gosse explored the sea life around Poole, a coastal town in southern England. His love for natural history awakened very early, he was encouraged by his aunt Susan Bell to observe and draw wildlife.

It was from his aunt Bell that Gosse learned about the metamorphosis of insects and the name of the common red sea anemone. Bell even suggested to Gosse that he should try to keep sea anemones alive in vessels of fresh seawater- an inception of sorts for an idea that he later championed. Gosse also took scientific inspiration from Bell's son Thomas, a naturalist who went on to become professor of zoology at King's College, London.

Finding his way across the Atlantic to Newfoundland, Canada, Gosse became a clerk in a seal-fishery at Carbonear harbour in 1827. In his early twenties, Gosse began to collect and document insects wholeheartedly in his spare time. When a couple of ventures he tried in Canada failed, he Books give him voice

Having received an invitation from a society to write An Introduction to Zoology, his research led him to write another, The Ocean. The unexpected success of his books earned him a fully-financed collecting expedition to Jamaica and his time there led to several more books. By this time, Gosse had not only developed the nuances of being a naturalist, but had also established himself as an important voice in the field.

By the 1840s, Gosse was collecting marine specimens in earnest, going about his business in two main fashions. As the eroding tides had created habitats for diverse lifeforms in the geologically varied shores of Dorset and Devon, Gosse explored these areas on foot. Additionally, he also collected marine species by coastal dredging from a boat.

By combining his love of observing with collecting, studying, drawing, and writing, Gosse became a Goliath in the field. He knew that in order to create reliable records that captured public imagination and led to scientific progress, he needed to keep his collection in good health and have a clear view of them. And so it was that Gosse became an authority in setting up a home-based aquarium, making artificial seawater, and even maintaining the set-up.

World's first public aquarium

It therefore comes as no surprise that Gosse was one of the most important people in setting up the first public aquarium in the world. Called the "Fish House", it was set up in Regent's Park Zoological Gardens as part of the London Zoo and thrown open to the public on May 21, 1853.

In his 1853 book A Naturalist's Rambles on the Devonshire Coast, the word "vivarium" was used interchangeably with "marine aquarium". A year later, however, Gosse firmly believed that "aquarium" best described it. He mentioned that the word should be "neat, easily pronounced and easily remembered" in his 1854 book The Aquarium: An Unveiling of the Wonders of the Deep Sea, thereby setting it stone.

Additionally, he also stated the following: "Let the word AQUARIUM then be the one selected to indicate these interesting collections of aquatic animals and plants, distinguishing it as Freshwater Aquarium, if the contents be fluviatile, or a Marine Aquarium, if [the contents are salt water-based]."

Against evolutionary concepts Gosse was a contemporary of celebrated English naturalist Charles Darwin and the latter even turned to Gosse when setting up an aquarium of his own. Even though a lot of their work actually overlapped, Gosse firmly rejected the evolutionary concepts proposed by Darwin owing to his own religious beliefs.

Even though his creationist theories marginalised him, Gosse spent his entire lifetime observing the world around him, until his death in 1888. His work and practical contributions to marine zoology were important to the scientific establishment of his times. And the aquariums that he envisioned still enable us to bring a tiny slice of ocean life home.

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What tool is used for accurate measurement?

Accurate measurements are made with the help of various measuring tools. Let’s look at a few of them today

  • Glucometer

A glucometer or glucose meter is a medical device that is used to determine the concentration of glucose in the blood. The device is available in user-friendly forms like small hand-held devices or paper strips. People with diabetes often keep this device with them at home to regularly monitor their blood glucose/sugar levels.

  • Depth finder

Also called the echo sounder, this device is used on ships to determine the depth of water. The device uses reflected sound from the bottom of the water body to calculate the depth. It sends sound waves from the water surface and detects the reflected wave from the bottom (the echo). From the knowledge of the speed of sound in water and the time taken by the sound for the round trip, the distance travelled can be calculated and thus the depth.

The same device is used to detect underwater objects. Fishermen use it to detect the presence of big fish in the water.

  • Speedometer

A speedometer measures the speed of a moving vehicle and displays the speed for easy reference while the vehicle is in movement. The device displays the current speed in kilometres per hour on the vehicle’s instrument dashboard. These days all cars are factory fitted with common device, but in the early 1900s, it was an expensive option.

  • Sound level meter

This device measures the intensity of noise/sound. The instrument is basically a microphone that picks up sound and converts it into an electrical signal which can be measured by a meter that is calibrated to read the sound level in decibels (a unit to measure sound intensity). If the decibel level of zero is the average threshold of hearing, then 120 decibels represents extremely loud sound that is painful to the human ear. Sound level meters are used frequently in some work places to provide sound information relating to prevention of deafness from excessive noise.

  • Light meter (photography)

This device is used to measure the amount of light that is ideal for use in photography. It is an excellent tool for photographers because it can accurately determine how much exposure is required for a photograph. This information can help the photographer to decide the correct camera shutter speed for the best exposure in certain lighting situations.

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What are the meaning, origin and usage of word ‘Stymie’?

(Pronounced stai.mee)

Meaning: As a verb, “stymie” means to hinder the progress of or to stop someone from doing something. As a noun, the term means a situation presenting such difficulties as to deter any attempt to deal with it.

Origin: Of uncertain origin, it perhaps came from the Scottish “stymie” meaning “person who cannot see well.” The word “stymie” entered English in the 19th Century as a noun referring to a golfing situation in which one players ball lies between another ball and the hole on the green, thereby blocking the line of play. Later, it came to be used as a verb in the present sense and also in non-golf contexts.

Usage: Faced with financial constraints, the company is putting a stymie on spending.

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What are the meaning, origin and usage of word ‘Inaugural’?

(pronounced i.naw.gruhl)

Meaning: The word inaugural marks the beginning of an institution, activity, or period of office.

Origin: In use since the 1680s, the word is derived from French inaugural, which has been around since the 17th Century. The French word is from inaugurer “to inaugurate”, which is from Latin inaugurare, of the same meaning. The noun meaning “an inaugural address” has been in use from 1832.

Following a spike in usage from the 1850s to the 1900s, the usage of the word has remained fairly even.

Usage: The inaugural Women’s Premier League auction saw some of the top international women players end up with fat pay cheques.

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What are the meaning, origin and usage of word ‘Zucchetto’?

(Pronounced tsuk.ket.to.)

Meaning: This noun refers to a Roman Catholic cleric’s skullcap with different colours for different ranks – black for a priest, purple for a bishop, red for a cardinal, and white for the Pope.

Origin: This word has its origin in the Italian word zucca, meaning gourd, head, in reference to its shape. This is, in turn, from Late Latin cucutia, meaning gourd, probably from Latin cucurbita, meaning pumpkin or squash.

Example: The wind swept away the Pope’s zucchetto.

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What are the meaning, origin and usage of word ‘Gamut’?

Pronounced as: ga-muht

Meaning: A noun, "gamut" means an entire range or series

Origin: Its origin is considered to be a contraction of "gamma ut', a Latin expression in the Middle Ages for "the full range of notes in music," Its first known was in the 15th Century.

Usage: When it was time to perform for the first time on stage, she experienced an entire gamut of emotions.

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Jobs literary figures once held

Delve into the lives of renowned literary figures who faced the pivotal choice of either retaining their day jobs or leaving them behind to embrace their true passion for the written word. Read on to discover how some of them drew inspiration from their jobs, seamlessly integrating their work experiences into their literary masterpieces.

Agatha Christie

Agatha Christie, the beloved ‘Queen of crime, has left an indelible mark on the genre of detective fiction. However, it may surprise you to learn that prior to her literary success, the English author worked as a pharmacist’s assistant until the conclusion of World War I. In 1914, when the U.K entered into war with Germany, Christie promptly joined the Voluntary Aid Detachment, dedicating the next four years to caring for injured soldiers at a military hospital. It was during this period that she drew upon her pharmaceutical knowledge, particularly in the realm of poisons, to craft her debut novel, The Mysterious Affair at Styles. Christie’s involvement in the pharmacy profession was not limited to World War I, as she resumed her duties during World War II, amassing countless hours of invaluable work. Her experiences as a wartime pharmacist undoubtedly honed her ability to “imagine worst-case scenarios, gruesome deaths, and pharmaceutical murder”. Kathryn Harkup says in her book, A is for Arsenic: The Poisons of Agatha Christie.

Harper Lee

Harper Lee, the renowned American novelist, revolutionised literary history in 1960 with her groundbreaking work, To Kill a Mockingbird, fearlessly bringing the issue of racial injustice to the forefront. Prior to this transformative moment, Lee supported herself as an airline ticketing agent while embarking on a quest for a writing career after leaving law school. Despite her demanding day job with Eastern Airlines and British Overseas Airways Corporation. Lee tenaciously pursued her passion by crafting articles and short stories in her spare time. In a fortunate turn of events in 1956, fate smiled upon her. Through her childhood friend-turned-writer Truman Capote, Lee crossed paths with the esteemed American Broadway composer Michael Brown. Remarkably, during the joyous Christmas holidays, Brown gifted her an extraordinary present-a whole year’s worth of wages-along with a heartfelt message. This granted her the freedom to devote all her time to writing. A mere twelve months later, Lee presented her agent with the initial draft of To Kill a Mockingbird, setting the stage for her exceptional literary career.

Sir Arthur Conan Doyle

British author Sir Arthur Conan Doyle is renowned worldwide as the visionary behind Sherlock Holmes, one of English literature’s most iconic fictional characters. However, his contributions extend far beyond being the pioneer of modern detective literature. In 1881, Doyle earned his Bachelor of Medicine and Master of Surgery qualifications from Edinburgh, followed by an M.D. in 1885 upon completing his thesis. During his tenure as a general practitioner, he dedicated particular attention to ophthalmology (diagnosis and medical treatment of the eyes), studying the field in Vienna and working alongside renowned ophthalmologists in Paris. Upon returning to London, he established an ophthalmological practice near Harley Street. It was during his time as a medical student that Doyle was profoundly influenced by his professor. Dr Joseph Bell, whose exceptional ability to observe the minutest details about a patient’s condition served as the inspiration for Sherlock Holmes, the ultimate master of deductive reasoning. In 1891, Doyle experienced a severe influenza-induced health crisis, which prompted him to reevaluate his life’s priorities. Merely a year later, the first collection of 12 stories featuring the adventures of Sherlock Holmes was published.

T.S. Eliot

T.S. Eliot, the distinguished recipient of the 1948 Nobel Prize in Literature, stands tall as one of the most influential American poets of the 20th Century. Remarkably, Eliot sustained himself through various roles as a teacher, banker, and editor throughout his life. Since poetry remained his true passion, he pursued it during his spare moments. From 1917 to 1925, Eliot worked in the foreign transactions department at Lloyd’s Bank, dedicating his days to the financial realm. However, in 1921, following a nervous breakdown, he took a break from his banking career and completed his magnum opus. The Waste Land, which was edited by his friend and fellow American poet, Ezra Pound. Pound, along with a collective of writers, established Bel Esprit, a fund aimed at financially supporting Eliot’s transition to full-time writing. Despite Pound’s success in gamering pledges from several subscribers, Eliot refused to accept the money and remained resolute in retaining his day job. Nonetheless, The Liverpool Post, Chicago Daily Tribune, and the New York Tribune mistakenly reported that Eliot had accepted the funds while maintaining his position at the bank. Eliot expressed his disagreement, prompting the newspapers to publish retractions. In 1925, Eliot eventually parted ways with Lloyds, embarking on a new path as an editor at a publishing house.

Stephen King

Renowned for his spine-chilling and hair-raising novels such as The Shining, It and Carrie. American author Stephen King has reigned supreme in the horror genre for over five decades. His gripping tales have not only captivated readers but also found immense success on the silver screen, becoming blockbuster hits. As a young boy, King stumbled upon a treasure trove of fantasy-horror fiction books that once belonged to his father, igniting his passion for writing. By the tender age of seven, he had already embarked on his own storytelling journey. However, as he pursued his dream, King faced the need to support himself through various odd jobs. He toiled as a janitor, manned gas pumps, and even worked at an industrial laundry facility, all while persistently crafting and submitting short stories for publication. This striking career transition vividly illustrates that one’s current occupation does not determine their lifelong path. Instead, any job can serve as a stepping stone to something greater, as King’s remarkable journey exemplifies.

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