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Fighting the ozone hole accidentally saved us

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This article was originally posted on Hakai magazine, online publication about science and society in coastal ecosystems. Read more stories like this at hakaimagazine.com.

In 1985, the British Antarctic Survey warned the world that a giant hole was forming in the atmosphere high above the South Pole in the Earth’s protective ozone layer. World leaders quickly gathered to work out a solution. Two years later, the United Nations agreed to ban chemicals that erode the layer of the stratosphere that protects the Earth from solar ultraviolet radiation. Known as the Montreal Protocol Agreement, it is still one of the most widely ratified UN treaties.

The Montreal Protocol was a victory for diplomacy and the stratosphere. But the agreement, unknown to its signatories at the time, also came as an unexpected hedge against climate catastrophe. ace new research reveals that the aptly named ozone-depleting substances (ODSs) that created the hole over Antarctica are also responsible for the 30 percent temperature rise we observed worldwide from 1955 to 2005.

Michael Sigmond, a climate scientist at Environment and Climate Change Canada, is the lead author of a new study that calculates the ability of ODS to capture greenhouse gases. The contribution of substances to global warming, he says, is “greater than most people realize.”

The Montreal Protocol governs almost 100 ozone-eating chemicals. Many of these are related to chlorofluorocarbons (CFCs), chemicals popularized in the 1930s for use in aerosol cans, foam plastics, and refrigerators. Compared to the many toxic and flammable alternatives they replaced, CFCs were considered miracle chemicals, and by the early 1970s the world was producing almost a million tons of them a year.

Since the signing of the Montreal Protocol in 1987, the world has stopped using almost 99 percent of ozone-depleting substances. The red graph shows hotspots of low ozone in 2019. Although the situation has greatly improved from the worst levels in the 1990s and 2000s, the United Nations says the ozone hole over Antarctica will not close until 2066. Photo NASA Earth Observatory

CFCs are inert and therefore do not react with other gases. Instead, they tend to accumulate in the atmosphere and drift where the wind takes them, hanging in the air for long periods of time. 85 years old or more. Once they reach the stratosphere, the second layer of the Earth’s multi-layered atmosphere, the CFCs begin to break down. They are “destroyed by photons,” explains Dennis Hartmann, a climate scientist at the University of Washington who was not involved in the study. This jet noise caused a hole in the ozone layer.

In the troposphere, the lowest level of the atmosphere where fewer photons reach, ODSs act as persistent greenhouse gases. Back in 1987, scientists knew that ODSs captured some solar radiation, but didn’t know how much. Only recently Scientists are gathering evidence that ODSs are, in fact, one of the most destructive warming agents of the past half century.

The effects of this warming are intensifying at the poles. The work of Zsigmond and colleagues shows that if ODS had never been mass-produced—if atmospheric concentrations had remained at 1955 levels—the Arctic today would be at least 55% colder and there would be 45% more sea ice. September.

ODS production stabilized in the 1990s. But because they are so long-lived, these gases are still circulating, and the warming they cause continues to increase. But it could have been much worse. By banning ODS, the Montreal Protocol inadvertently prevented 1°C warming by 2050.

With the Montreal Protocol, world leaders rallied around an urgent matter. In the process, we inadvertently abandoned the second largest factor in global warming. The windfall benefits for the global climate, says Suzanne Tegtmeier, an atmospheric scientist at the University of Saskatchewan who was not involved in the study, “could be considered a very welcome and very positive side effect.”

While it has taken a lot more negotiation and innovation to start displacing the main driver of climate change, carbon dioxide, the Montreal Protocol proves the power of collective action and shows how addressing environmental challenges can help us in ways we didn’t expect.

This article first appeared in Hakai magazine and is published here with permission.

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Paleontologists have discovered a new species of spinosaurus dinosaur

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A new genus and species of spinosaurid dinosaur, named Protathlitis cinctorrensis, was discovered by Dr. John Wilson. Andres Santos-Cubedo of Jaume I University and colleagues.

The post Paleontologists discover new spinosaurian dinosaur species first appeared on Sci.News: Breaking Science News.

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5 best psychological theories of Sigmund Freud

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This article was originally published on May 6, 2022.

When we tell our friends about a crazy dream we had with them, or when we use terms like ego and free association, we are referring to Sigmund Freud.

More than 80 years after his death, Freud’s theories about the human unconscious and how it affects our behavior continue to permeate Western culture. Freud’s pioneering psychological theories, presented to the world at the turn of the 20th century, changed our understanding of the human mind. His theories have influenced not only psychological theory, but also the way we behave in everyday life, in the family and at work. life.

Freud’s psychoanalytic theory

Terms like sleep analysis, free association, Oedipus complexthe Freudian slip and the ubiquitous ego, and id and superegowoven into much of what we do, think and say.

1. Sleep analysis

In modern society, we often talk about our dreams. If you google “dream quotes” there seems to be an endless supply of them. From bestselling author Erma Bombeck’s joke, “It takes a lot of guts to show your dreams to someone else,” to the American rapper and actor, Tupac Shakur lyrics, “Reality is wrong. Dreams are real.” But it is Freud who reveals what a dream is – an alternative reality that we experience when we sleep.

“The interpretation of dreams is the royal road to knowledge of the unconscious activities of the mind,” writes Freud.

Freud’s theory of dreams and his book The Interpretation of Dreams., were revolutionary. Before its publication in 1899, scientists considered dreams to be “meaningless”. Freud believed that dreams were “the disguised fulfillment of repressed childhood desires”.

While popular culture has taken Freud’s theories and applied their meaning – for example, dreams about flying mean that you are subconsciously thinking about ambition – Freud never wrote a dream dictionary. In fact, he shied away from such specifics. He insisted that although dreams are symbolic, they are specific to the individual and cannot be defined in general for the entire society.

2. Free association

Freud’s dream theories directly influenced his free association theory. Based on the theory that dreams and their meanings are individual, Freud allowed his patients to interpret their dreams for themselves, instead of giving them their own opinion. He called his process free association. With each new feature of a dream during a psychoanalytic session, Freud suggested that his patients relax and—to use a modern term—spit out what they thought it meant. Patients threw out ideas as they came, no matter how trivial they might be.

3. Reports on Freud

One of the most popular phrases from Freud’s theories: Freudian slip. He believed that a “slip of the tongue” – when we say something that we are not going to say – shows what we are thinking, subconsciously. Freud presented his theory of the Freudian slip in his 1901 book. Psychopathology of everyday life, and suggested that these verbal (and sometimes written) errors were rooted in “unconscious urges” and “unexpressed desires”. In addition, Freud believed that the inability to remember something – for example, someone’s address or name – is due to our need or desire to suppress it. Modern science has yet to explain why Freudian slips happen.

4. Oedipus complex, penis envy and womb envy

Experts believe Oedipus complex, psychosexual theory, as Freud’s most controversial theory. According to Freud, this is an unconscious desire that begins at the phallic stage of development, between the ages of three and six. The child is sexually attracted to its parent of the opposite sex and is jealous of its parent of the same sex.

Popular culture uses the Oedipus complex as a general term for the phase for both boys and girls. But Freud postulated that boys experience an Oedipus complex and girls an Electra complex. This is when a girl unconsciously becomes sexually attached to her father and is hostile to her mother.

Freud believed that the Oedipus complex was “the central phenomenon of the sexual period of early childhood”, but there is no scientific evidence to support his theory.

“Penis envy” grew out of Freud’s theory of the Oedipus complex, and Freud published it in 1908. Freud believed that a woman’s realization that she does not have a penis leads to intense envy, which underlies female behavior.

“Freud claimed that the only way to overcome this penis envy was to have a child of his own, and even went so far as to suggest that he wanted a male child in his efforts to gain a penis,” the researcher writes. British Psychological Society. Psychoanalyst Karen Horney, a contemporary of Freud whose theories led to the feminist psychology movement, saw penis envy as purely symbolic.

Horney postulated that envy, not of the phallus itself, but of the envy of the penis, had more to do with a woman’s position in society and “the desire for social prestige and position that men experience.” Thus, women felt inferior because of the freedom and social status they lacked because of their gender, and not because of their literal lack of a phallus,” the author writes. British Psychological Society.

In addition, Horney introduces the term “womb envy” and explains that men are negatively affected by their inability to have children and envy the “biological functions of the female sex”, including breastfeeding and pregnancy.

5. Ego, Id and Superego

Somebody think human psyche as the most enduring psychoanalytic theory in Freud’s career. Freud published his personality theory in 1923, which hypothesizes that the human psyche is divided into three parts – the ego, the id, and the superego. And they all develop at different stages of our lives. It is important to note that Freud believed that these are not physical objects in our brains, but rather “systems”.

While the word “ego” is used much more frequently in popular culture than “id” and “superego”, the three are related. According to Freud, the id is the most primitive part of the human psyche. This is the basis of our sexual and aggressive urges. The superego is our moral compass, and the ego is the judge, if you will, between the pulls of the id and the superego.

Freud’s psychological theories remain in our subconscious and consciousness

The next time you wake up from a strange dream that you can tell your best friend in detail, he will respond: “Oh, snakes? This dream is all about penis envy.” Or your boss yells at you and you mutter under your breath, “Too ego.” Or you are killing time on a long car ride and throwing away words and free associations – you have to thank Freud. And, if you’re looking for a reason to pay tribute to Freud and all of his contributions to our folk, pop culture and therapy, consider raising a toast to the father of psychoanalysis. He was born on May 6, 1856.

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Moissanite vs Diamond: Which Engagement Ring is Best?

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Moissanite rings are a great alternative to traditional diamonds because they are cheaper and brighter. However, while moissanite stones create sparkle, some feel it is too much for everyday wear, especially when compared to natural diamonds. (Remember the link to the disco ball?)

In addition, moissanite and other lab-created gemstones may be more sustainable than some diamonds, including those known as “blood diamonds”. These gemstones are mined with slave labor, deadly working conditions and unregulated trading practices, while moissanite stones, on the other hand, are produced in laboratories.

Of course, some consumers will always prefer natural diamonds to imitations like cubic zirconia and moissonite because diamonds retain their value and remain a traditional symbol of unwavering loyalty and love in a relationship.

In any case, any decision you make in a moissanite vs. diamond dispute will be personal. You must choose an engagement ring that suits your style, budget and personal preference.

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