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I can, however, describe what I, as prime minister of Australia, did to curb gun violence following a horrific massacre 17 years ago in the hope that it will contribute constructively to the debate in the United States.

Our challenges were different from America’s. Australia is an even more intensely urban society, with close to 60 percent of our people living in large cities. Our gun lobby isn’t as powerful or well-financed as the National Rifle Association in the United States. Australia, correctly in my view, does not have a Bill of Rights, so our legislatures have more say than America’s over many issues of individual rights, and our courts have less control. Also, we have no constitutional right to bear arms. (After all, the British granted us nationhood peacefully; the United States had to fight for it.)

Given our decentralized system of government, I could reduce the number of dangerous firearms only by persuading the states to enact uniform laws totally prohibiting the ownership, possession and sale of all automatic and semiautomatic weapons while the national government banned the importation of such weapons.

The presence of humans rarely improves the lives of neighboring species. Yet a study shows that indigenous Australian hunters create prime habitat for a desert-dwelling lizard.

The frequent burning creates a patchy mosaic of charred lands and vegetation springing up in various stages of regrowth.

The lizards may prefer these edges because emerging vegetation from recently burned patches bears more food, the researchers speculate.

Facebook released a statement on Wednesday stating that regrettably it was abandoning its plans to “significantly increase our investments with local publishers” and instead pulled the plug. Google meanwhile has managed to sidestep the proposition of a “link tax” by delivering the government’s objective of lucrative deals with Australian media companies from News Corp down to the smallest publishers. By flexing a little Google has for now avoided mandatory payment arbitration.

Governments have arguably not paid nearly enough attention to producing alternative digital solutions to giant centralised advertising companies that provide an increasing number of communication services for their citizens. Facebook’s petulance has inadvertently made a case in Australia for more regulation rather than less.

News organisations need to develop alternative platforms, and governments need to provide more regulated certainty. Highly digital newsrooms that have resources and strong relationships with their audiences started moving away from Facebook a long time ago, and are less affected by its volatility.

In 1942, the anthropologist Ashley Montagu published “Man’s Most Dangerous Myth: The Fallacy of Race,” an influential book that argued that race is a social concept with no genetic basis.

eginning in 1972, genetic findings began to be incorporated into this argument. That year, the geneticist Richard Lewontin published an important study of variation in protein types in blood. He grouped the human populations he analyzed into seven “races” — West Eurasians, Africans, East Asians, South Asians, Native Americans, Oceanians and Australians — and found that around 85 percent of variation in the protein types could be accounted for by variation within populations and “races,” and only 15 percent by variation across them. To the extent that there was variation among humans, he concluded, most of it was because of “differences between individuals.”

In this way, a consensus was established that among human populations there are no differences large enough to support the concept of “biological race.” Instead, it was argued, race is a “social construct,” a way of categorizing people that changes over time and across countries.

“You don’t know anyone who has made as much money out of this as I have,” he said over the phone. No argument here. He wouldn’t specify an amount, but reckoned that he was up almost two thousand per cent on the year.

He bought a big stake in Alpha Pro Tech, one of the few North American manufacturers of N95 surgical masks, with the expectation that when the virus made it across the Pacific the company would get government contracts to produce more. The stock was trading at about three dollars and fifty cents a share, and so, for cents on the dollar, he bought options to purchase the shares at a future date for ten dollars: he was betting that it would go up much more than that. By the end of February, the stock was trading at twenty-five dollars a share

He quickly put some money to work

There is good evidence a midlife decline in life satisfaction is real. Population surveys typically find both women and men report the lowest satisfaction in middle age. The Australian HILDA survey locates the lowest life satisfaction at age 45, and the Australian Bureau of Statistics singles out the 45-54 age bracket as the glummest.

Middle age may be dislocating for some but there is little evidence it is usually a period of crisis and despondency. Psychologically speaking, things tend to get better. If there is a small dip in how people evaluate their lot -- even if it is objectively no worse than before -- this is understandable. Our attention shifts from time past to time left, and that requires a process of adjustment.

In one US study, one-third of people in their 70s defined themselves as middle-aged. This research accords with the finding middle-aged people tend to feel one decade younger than their birth certificate.

You, hear me! Give this fire to that old man. Pull the black worm off the bark and give it to the mother. And no spitting in the ashes! It’s an odd little speech. But if you went back 15,000 years and spoke these words to hunter-gatherers in Asia in any one of hundreds of modern languages, there is a chance they would understand at least some of what you were saying.

That’s because all of the nouns, verbs, adjectives and adverbs in the four sentences are words that have descended largely unchanged from a language that died out as the glaciers retreated at the end of the last Ice Age. Those few words mean the same thing, and sound almost the same, as they did then.

A team of researchers has come up with a list of two dozen “ultraconserved words” that have survived 150 centuries. It includes some predictable entries: “mother,” “not,” “what,” “to hear” and “man.” It also contains surprises: “to flow,” “ashes” and “worm.”

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Hodgson approached the organisers of the California State Fair wine competition, the oldest contest of its kind in North America, and proposed an experiment for their annual June tasting sessions.Each panel of four judges would be presented with their usual "flight" of samples to sniff, sip and slurp. But some wines would be presented to the panel three times, poured from the same bottle each time. The results would be compiled and analysed to see whether wine testing really is scientific.

Results from the first four years of the experiment, published in the Journal of Wine Economics, showed a typical judge's scores varied by plus or minus four points over the three blind tastings. A wine deemed to be a good 90 would be rated as an acceptable 86 by the same judge minutes later and then an excellent 94.

The test of replicability, as it’s known, is the foundation of modern research. Replicability is how the community enforces itself. It’s a safeguard for the creep of subjectivity. Most of the time, scientists know what results they want, and that can influence the results they get. The premise of replicability is that the scientific community can correct for these flaws.

But now all sorts of well-established, multiply confirmed findings have started to look increasingly uncertain. It’s as if our facts were losing their truth: claims that have been enshrined in textbooks are suddenly unprovable.

This phenomenon doesn’t yet have an official name, but it’s occurring across a wide range of fields, from psychology to ecology.

The coal industry knows that to stop runaway climate change all coal-powered generators need to close Australia joined 174 countries and the European Union in 2015, signing the Paris agreement. In doing so, Australia agreed to do its part in keeping the global temperature rise “well below” 2C.

According to data from the Office of the Chief Economist, the demand for coal-generated electricity has dropped by more than 15% in the past eight years.

Coal is now the most expensive form of new power. According to Bloomberg New Energy Finance, the cost of energy from a new coal power plant would be $134-$203/MWh. That’s more expensive than wind, solar or highly efficient combined-cycle gas (costing $61-$118/MWh, $78-$140/MWh and $74-$90/MWh, respectively).

While researchers have known for decades that the body undergoes various metabolic and hormonal changes while it’s losing weight, the Australian team detected something new. A full year after significant weight loss, these men and women remained in what could be described as a biologically altered state. Their still-plump bodies were acting as if they were starving and were working overtime to regain the pounds they lost. For instance, a gastric hormone called ghrelin, often dubbed the “hunger hormone,” was about 20 percent higher than at the start of the study. Another hormone associated with suppressing hunger, peptide YY, was also abnormally low. Levels of leptin, a hormone that suppresses hunger and increases metabolism, also remained lower than expected. A cocktail of other hormones associated with hunger and metabolism all remained significantly changed compared to pre-dieting levels. It was almost as if weight loss had put their bodies into a unique metabolic state, a sort of post-dieting syndrome that set them apart from people who hadn’t tried to lose weight in the first place.

Most of us say we admire people who stand up for what’s right (or what is eventually shown to be right), especially when they are strong enough to stick to their guns in the face of strenuous opposition.

Australian academics argue that group members are often hostile to people who buck conformity, even if the members later agree with the dissenter.

Professor Zimbardo has classified evil activity in three categories: individual (a few bad apples), situational (a bad barrel of apples) or systemic (bad barrel makers).

A smartphone app has been launched to help save an Australian indigenous language that is in danger of disappearing.

aims to prevent the extinction of the Iwaidja language

"People have their phones with them most of the time, the app is incredibly easy to use, and this allows data collection to happen spontaneously, opportunistically,"

subjects — 780 New Haven residents who volunteered — helped make an untenured assistant professor named Stanley Milgram a national celebrity. Over the next five decades, his obedience experiments provided the inspiration for films, fiction, plays, documentaries, pop music, prime-time dramas, and reality television. Today, the Milgram experiments are considered among the most famous and most controversial experiments of all time. They are also often used in expert testimony in cases where situational obedience leads to crime

Perry’s evidence raises larger questions regarding a study that is still firmly entrenched in American scientific and popular culture: if Milgram lied once about his compromised neutrality, to what extent can we trust anything he said? And how could a blatant breach in objectivity in one of the most analyzed experiments in history go undetected for so long?

the debate has never addressed this question: to what extent can we trust his raw data in the first place? In her riveting new book, Behind the Shock Machine: The Untold Story of the Notorious Milgram Psychology Experiments, Australian psychologist Gina Perry tackles this very topic, taking nothing for granted

reflecting on his career so far, Tao told me that his view of mathematics has utterly changed since childhood. ‘‘When I was growing up, I knew I wanted to be a mathematician, but I had no idea what that entailed,’’ he said in a lilting Australian accent. ‘‘I sort of imagined a committee would hand me problems to solve or something.’’

But it turned out that the work of real mathematicians bears little resemblance to the manipulations and memorization of the math student. Even those who experience great success through their college years may turn out not to have what it takes. The ancient art of mathematics, Tao has discovered, does not reward speed so much as patience, cunning and, perhaps most surprising of all, the sort of gift for collaboration and improvisation that characterizes the best jazz musicians

Tao now believes that his younger self, the prodigy who wowed the math world, wasn’t truly doing math at all. ‘‘It’s as if your only experience with music were practicing scales or learning music theory,’’ he said, looking into light pouring from his window. ‘‘I didn’t learn the deeper meaning of the subject until much later.’’

Languages are something of a mess. They evolve over centuries through an unplanned, democratic process that leaves them teeming with irregularities, quirks, and words like “knight.” No one who set out to design a form of communication would ever end up with anything like English, Mandarin, or any of the more than six thousand languages spoken today.“Natural languages are adequate, but that doesn’t mean they’re optimal,” John Quijada, a fifty-four-year-old former employee of the California State Department of Motor Vehicles, told me. In 2004, he published a monograph on the Internet that was titled “Ithkuil: A Philosophical Design for a Hypothetical Language.” Written like a linguistics textbook, the fourteen-page Web site ran to almost a hundred and sixty thousand words. It documented the grammar, syntax, and lexicon of a language that Quijada had spent three decades inventing in his spare time. Ithkuil had never been spoken by anyone other than Quijada, and he assumed that it never would be.

his “greater goal” was “to attempt the creation of what human beings, left to their own devices, would never create naturally, but rather only by conscious intellectual effort: an idealized language whose aim is the highest possible degree of logic, efficiency, detail, and accuracy in cognitive expression via spoken human language, while minimizing the ambiguity, vagueness, illogic, redundancy, polysemy (multiple meanings) and overall arbitrariness that is seemingly ubiquitous in natural human language.”

Ithkuil, one Web site declared, “is a monument to human ingenuity and design.” It may be the most complete realization of a quixotic dream that has entranced philosophers for centuries: the creation of a more perfect language.

In “That Sugar Film,” which first had its debut in Australia this year, Mr. Gameau gives up his normal diet of fresh foods for two months to see what happens when he shifts to eating a diet containing 40 teaspoons of sugar daily, the amount consumed by the average Australian

The twist is that Mr. Gameau avoids soda, ice cream, candy and other obvious sources of sugar. Instead, he consumes foods commonly perceived as “healthy” that are frequently loaded with added sugars, like low-fat yogurt, fruit juice, health bars and cereal.

Mr. Gameau finds that his health and waistline quickly spiral out of control.

Self-control, curiosity, “grit” — these qualities may seem more personal than academic, but at some schools, they’re now part of the regular curriculum.

Some researchers say personality could be even more important than intelligence when it comes to students’ success in school. But critics worry that the increasing focus on qualities like grit will distract policy makers from problems with schools.

A number of researchers have been successful in improving students’ conscientiousness, Dr. Poropat said in an interview. One team, he said, found that when elementary-school students get training in “effortful control,” a trait similar to conscientiousness, “it not only improves the students’ performance at that point in their education, but also has follow-on effects a number of years afterward.” Another study found that a 16-week problem-solving training program could increase retirees’ levels of openness.