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Earth's new ocean

According to the National Geographic Society, Earth now has a new ocean: the Southern Ocean.

Geographers have debated whether the waters around Antarctica had enough unique characteristics to deserve their own name, or whether they were simply cold, southern extensions of the Pacific, Atlantic, and Indian Oceans. 

With a range stretching the circumference of Antarctica to the 60-degrees South latitudinal line, the Southern Ocean “encompasses unique and fragile marine ecosystems that are home to wonderful marine life such as whales, penguins, and seals,” explains National Geographic’s Enric Sala. The region includes such creatures as migrating humpback whales and many different seabirds.

Visuals: Falling sperm count

In 2017, Shanna Swan and Hagai Levine, along with six other researchers, estimated the average sperm count for 43,000 men in 55 countries across the world. The data, from 185 previously published studies, suggest that sperm counts fell by about 25% between 1973 and 2011. They found that sperm counts had in fact fallen by about 50% in Western countries over the period. Although the data were less plentiful, similar trends were observed in developing countries, too.

Please have a look at the chart below and discuss what you see with your teacher.

 

Murakami's "First Person Singular"

National Public Radio (NPR), a publicly-funded American news organization, held an interview with the famous Japanese author Haruki Murakami about his new collection of stories, First Person Singular. In this collection, Murakami writes in the first-person singular “I” perspective.

Murakami said, "There's a long tradition in modern Japanese literature of the autobiographical, so-called I-novel, the idea that sincerity lies in honestly and openly writing about your life, making a kind of self-confession. I'm opposed to that idea and wanted to create my own 'first personal singular' writing."

Murakami goes on to explain that he often writes characters based on his personal experiences and rewrites them multiple times to the point that the experiences become fictional and hard to recognize from his own life.

Digital privacy and advertisements

According to The Economist, in April 2021, Apple, which supplies one-fifth of the world’s smartphones and around half of the United States', introduced a software update that will end targeted advertisement by companies. Its latest mobile operating system forces apps to ask users if they want to be tracked. Many are expected to decline. It is the latest privacy move forcing marketers to rethink how they target online ads.

By micro-profiling audiences and monitoring their behavior, digital-ad platforms claim to solve advertisers’ problem of not knowing which half of their budget is being wasted. According to Group M, the world’s largest media buyer, in the past decade, digital ads have gone from less than 20% of the global ad market to more than 60%.

What is great listening?

According to the Harvard Business Review (HBR), people often think they are better listeners than in actuality. They believe good listening means just a few things: not talking when others are speaking, letting others know you are listening through facial expressions and verbal sounds (e.g., Mm-hmm), and being able to repeat what others have said.

HBR analyzed data describing the behavior of 3,492 participants in a development program designed to help managers become better coaches. The study concluded that good listening is much more than being silent while the other person talks.

People perceive the best listeners to be those who periodically ask questions that promote discovery and insight. Good listening also includes interactions that build a person’s self-esteem. The best listeners make the conversation a positive experience for the other party, which does not happen when the listener is passive.

The ancient giant shrimp

According to Shape of Life, an online resource on everything related to animals, the Anomalocaris (ah-NOM-ah-LAH-kariss), from the Greek meaning “unusual shrimp”, was a major predator of the ancient seas during the Cambrian Explosion 530 million years ago. 

It grew up to 182 centimetres (almost 6 feet) long and had eyes with thousands of lenses, which gave the Anomalocaris extremely sharp vision. It was a fast swimmer, and once it caught up to its prey, the creature could grab it using front limbs equipped with sharp spikes on each segment. This combination of excellent vision, speed and spiky front arms would have made it a formidable predator.

The Anomalocaris’ mouth was composed of 32 overlapping plates. Some scientists interpret this as meaning that it could easily crush prey.

The ego's effect on leadership

According to the Harvard Business Review, the higher leaders rise in the ranks, the more they are at risk of getting an inflated ego. The bigger their ego grows, the more they are at risk of ending up in an insulated bubble, losing touch with their colleagues, the culture and ultimately their clients.

An unchecked ego can warp our perspective, twist our values and corrupt our behavior. When we believe we’re the sole architects of our success, we tend to be ruder, more selfish and more likely to interrupt others. An inflated ego also narrows our vision. The ego always looks for information that confirms what it wants to believe. Basically, a big ego makes us have a strong confirmation bias.

Visuals: language speed & density

According to The Economist, languages face a trade-off between complexity and speed. Those packed with information are spoken more slowly, while simpler ones are spoken faster. As a result, most languages are equally efficient at conveying information.

For instance, a Japanese translation of this text would be longer and a Thai one would be shorter, but readers would finish reading it at about the same time.

Have a look at the graph below and discuss what you see with your teacher.

Black holes support relativity

Albert Einstein spent nearly a decade developing his theory of general relativity, which he published in 1916. The theory asserts that gravity is matter warping space-time and so gravitational bends in space can alter the passage of time. While an appealing theory, it is yet unproven.

According to CNN, the first image of a black hole, captured in 2019, has revealed more support for Einstein's theory. The new finding has suggested his theory is now 500 times harder to disprove.

The black hole in this study is 6.5 billion times more massive than our sun. The research team measured the distortion in the black hole’s gravitational pull and found that the size of this black hole's shadow aligns with the theory of relativity, or matter warping space-time to create gravity.

While the theory of relativity has passed all of the tests thrown at it over the past century, further study is needed to confirm whether it continues to match up with astrophysical objects.

Where does consciousness come from?

According to BigThink, a publication focused on education, what consciousness is and where it comes from has absorbed great minds for thousands of years. In today's world, it's a question posed by physicists, cognitive scientists, and neuroscientists. There are a few prevailing theories.

The first is known as materialism. This is the idea that consciousness emanates from matter. In the case of people, by the firing of neurons inside the brain. If you take the brain out of the equation, then consciousness doesn't exist at all.

The second theory is mind-body dualism. This is perhaps more often recognized in religion. Here, consciousness is separate from matter. It is a part of another aspect of the individual, which in religious terms we might call the soul.

An explosion of stellar proportion

Global News, a Canadian news outlet, reported that astronomers detected an explosion over fifteen times the size of our galaxy. This makes it the biggest blast ever recorded.

The massive explosion occurred hundreds of millions of light-years away, where a supermassive black hole emitted large amounts of energy and matter while devouring a galaxy, blowing a hole in space that’s 2.58 million light-years across. It wiped out trillions of stars and tore through the surrounding galaxies. Researchers spotted the hole from the colossal gap it left in the middle of a cluster of galaxies.

The blast occurred in the Ophiucus cluster, a collection of galaxies some 390 million light-years away. It’s unclear exactly when the explosion happened, but researchers say it was definitely millions of years ago.

Rare giraffes come under threat

According to National Geographic, the remains of two white giraffes were found in a nature conservancy in northeastern Kenya. The giraffes likely had a rare genetic condition called leucism, which inhibits skin cells from producing pigment. It is believed that they were killed by poachers.

The animals had been well-known since 2017, after rangers spotted them in the conservancy and posted a video to YouTube, which then went viral.

This highlights a modern-day paradox: social media allows people to experience the joy and wonder of the planet’s rarest creatures while simultaneously putting animals at increased risk. Rarity and exclusivity are among the driving factors of the illegal wildlife trade, so unusual animals are more likely to be targeted by poachers.

National Geographic concluded that navigating how to report on unique animals without helping to put a target on their backs is a delicate process. 

Bans on cashless stores

The cashless economy has become increasingly prevalent in developed countries such as the U.S. and Japan. Consumers are incentivized to use debit or credit cards through discounts and freebies, and banks and credit card companies collect information on people’s spending habits.

Some stores in the U.S. have decided to stop accepting cash from customers altogether, which has resulted in a backlash. Millions of people, most of whom live below the poverty line, do not have a bank account and only deal in cash. Advocates have argued that the cashless economy discriminates against poor people and the homeless.

American cities and states have started banning cashless stores on the grounds that they are discriminatory. San Francisco, New York City, Washington, D.C., Philadelphia and New Jersey have recently passed legislation forcing stores to accept all types of legal tender.

The Golden Age of Television

Over the past 20 years, American television entered a Golden Age. Before the turn of the millennium, most TV shows followed familiar patterns: crime shows and situational comedies—also known as sitcoms—consisted of self-contained episodes with little plot development through a season or the run of the show.

Then, in 1999, a network called HBO took a huge risk by investing $2 million per episode in The Sopranos, a show that broke with the familiar pattern of television productions. The Sopranos invested in character development and took its time to tell a compelling story. It was a massive success that showed that audiences were willing to sit through drawn-out shows as long as they were good. HBO reproduced that early success with Six Feet Under and The Wire.

The rise of the hikikomori class

The Japan Times reports that the number of hikikomori in Japan, or those choosing complete withdrawal from all social interactions, has grown over the past few years. Psychiatrist Tamaki Saito, an expert on the subject, has stated that there might be some 2 million hikikomori in Japan, more than the official government estimate of 1.15 million. He also warned that the total number of Japanese foregoing social interactions might be as high as 10 million.

Official government estimates state that 613,000 hikikomori are between the ages of 40 and 64, raising the question of just how many elderly hikikomori will survive after their parents, who provide for all their daily needs, become ill or pass away.

Netizens shame COVID-19 profiteers

The Japan Times published an opinion piece arguing that the issue of people hoarding surgical masks has served to show people’s true nature. It notes that the outbreak has resulted in the spread of fake news and racism, and some unscrupulous people have been reselling face masks and even toilet paper at highly inflated prices on sites such as Mercari.

The author says that social media has also become a tool for shaming those engaged in bad behavior in Japan. Sites such as Twitter have made it simpler to spread footage of morally dubious activity. For instance, users uncovered truly ridiculous posts, including one in which 35 packs of masks were being sold for ¥75,000 by someone who claimed to have risked their health getting them.

Kowloon Walled City

For nearly a century, Kowloon Walled City stood out as a rare modern example of an ungoverned territory. When Great Britain took Hong Kong from the Chinese, they left a Chinese enclave in Kowloon, near Hong Kong island. As the 20th century unfolded, consecutive Chinese governments neglected the governance of the enclave, the British refused to get involved, and it took on a life of its own.

By the 1980s, nearly 50,000 people lived in 300 illegally built structures connected together by an interconnecting maze of passageways and staircases. Drugs and prostitution were common in the walled city, and people from nearby neighborhoods would come to visit cheap unlicensed doctors and dentists. Residents cooked and baked goods that they sold to vendors outside the enclave.

The ancient girl who ate hazelnuts

According to CNN, in late 2019, a small piece of birch pitch (pictured above) was found by archeologists on Lolland, the fourth largest island of Denmark. A study uncovered a 5,700-year-old girl's entire genome and oral microbiome, marking the first time human genetic material has successfully been extracted from something besides human bones.

Nicknamed Lola, the young girl who chewed on the birch pitch had blue eyes, dark skin and dark hair. Her last meal included hazelnuts and mallard duck but no milk. She was lactose-intolerant, which serves to validate the theory that adults evolved the tolerance after dairy farming was introduced.

The environmental costs of flying

The Japan Times reported that most world leaders chose to fly to New York for the United Nations General Assembly, but Swedish teenage activist Greta Thunberg made headlines for deciding to sail instead.

This has prompted a gathering of tourism executives to ponder how to address the fact that flying adds to the greenhouse gas emissions responsible for global warming. According to data cited by the Air Transport Action Group, in 2019, commercial flying accounted for about 2 percent of global carbon emissions and about 12 percent of transport emissions. By 2020, emissions from global international aviation are projected to be about 70 percent higher than in 2005 due to rising travel demand.

Prime editing diseases away

The BBC reports that a new way of editing DNA could correct 89% of the errors in DNA that cause disease. The technology, called prime editing, has been used to correct damaging DNA mutations in the lab, including those that cause sickle cell anaemia. It is the latest advance in gene editing, which is developing at a rapid pace.

DNA is found in nearly all of our cells, and gene editing is already changing scientific research with the promise of revolutionizing medicine. Nevertheless, deep moral and ethical questions arose after the creation of babies who were gene-edited to have protection from HIV.

Crispr-Cas9, a technology which was developed just seven years ago, scans DNA for the right spot and then cuts it in two, which creates the opportunity to edit the DNA. A study used prime editing to accurately insert or delete sections of DNA and to correct typos in a single "letter" out of the three billion that make up the human genetic code.