I’ve Never Driven a Car or Cooked: Meet Australia’s Ultimate Quiz Champion!

Issa Schultz follows a daily routine that few can match.

“I wake up, brew my coffee, then head to the computer for quizzes. After lunch, I return for more quizzes,” he states. “It might sound obsessive, but I embrace it. It’s fair to say I treat it like a full-time job.”

Schultz is the top quizzing champion in Australia, known among enthusiasts for his serious approach to trivia. Quizzing is not just a pastime for him; it defines his life. Every year, he appears on Channel 7 for about six weeks as one of the “Chasers” on the quiz show Chase Australia. The rest of his time is spent immersed in various topics, from sibling rivalries to AFL Drafts and Academy Award winners.

“I could easily go outside and engage in normal activities,” he chuckles. “But as one single guy without family responsibilities, I’ve got the unique opportunity to invest time into this.”

Schultz as the Supernard of Channel 7’s Chase Australia. Photo: Chase

“What’s crazier is that some individuals dedicate even more time than I do, especially in the UK and the US.”

Quizzing is a niche but worldwide phenomenon, thriving from North America to Europe and India. It can often be viewed as an evolution of pub trivia, particularly in its complexity. Schultz participated with pub teams daily before advancing to the next level. “When we enter international quizzes, pub trivia just isn’t challenging enough,” he explains.

A standard quiz question isn’t necessarily straightforward, often requiring one to connect seemingly unrelated images (“Was he a Chilean military dictator from 1973 to 1990?”).

Instead of raucous environments, the world of quizzing tends to be characterized by silence or solitude. The premier event in the quizzing calendar is the World Quiz Championship, held each June, where participants solve questions read by a proctor in a formal examination setting. Australia began hosting its national championship in February across Sydney, Melbourne, Perth, and Brisbane. These events, devoid of prizes, ascertain rankings both nationally and globally, with enthusiasts also exploring smaller competitions and Zoom leagues.

“When we arrive at the international quiz, the pub trivia is not obscure enough”: Issa Schultz. Photo: Guardian

“Usually, when I tell people about my weekend plans, I say, ‘I’m off to the library to sit quietly with a group of fellow nerds for an hour,'” shares Sally Gridley, an enthusiastic Australian quizzer. “We’ll take an exam for fun. Prizes? No, it’s purely for bragging rights, and you have to pay to participate.”

Gridley has been a serious quizzer for 11 years and even secured a win on a quiz show. Programs like The Chase and Mastermind capture audiences with their excitement and are one of the few effective ways to monetize one’s hobby. Gridley estimates the Australian quizzing community comprises around 30-35 regular quizzers, while the Global Leaderboard indicates unofficial membership is below 2,000. Participants note it’s a small yet committed community, warm and inviting to newcomers.


Nonetheless, a specific demographic predominates: men. Gridley estimates she is one of about eight regular female quizzers across Australia, where local groups are approximately 90% male. There are overlaps in other communities as well.

“It’s important to note that quizzing is quite popular among neurodivergent demographics; many quizzers have conditions such as autism and ADHD,” Gridley mentions. “In fact, I might be the most socially engaged person at any quiz event.”

Or as Schultz puts it, “There are many quirky individuals, and we embrace eccentricities!”

To climb the leaderboard as a quizzing participant, a unique form of dedication is required.

“It’s purely about glory”: Quizzer Sally Gridley showcases prizes from ABC’s hard quiz. Photo: Ellen Smith/Guardian

Aaran Mohann, a 35-year-old financial worker ranking third in Australia, believes he isn’t as dedicated to studying as many of his counterparts. His primary strategy involves completing numerous online quizzes, as competitors often cover similar topics. For instance, many focus on events from Coldplay concerts and popular culture phenomena like Dubai Chocolate.

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Flashcards as memory aids have gained popularity within the quizzing community, reveals Mohan. “It’s clear that many quizzers delve deeply into Wikipedia. One article leads to another, and before you know it, hours have passed.”

Schultz expects films to feature prominently in quizzes. He also invests in DK reference books covering topics from medicine to fishing, transcribing intriguing facts into his notebooks—a system that is “pointless to anyone except myself.”

However, he sets limits. “Pat Gibson is among the best British quizzers of all time and reads about five newspapers daily. I can’t keep up with that.”

Australian representative for Spain’s 2024 Quiz Olympiad (Aaran Mohann) With Jane Allen from the International Quiz Association. Photo: Supply

There’s much to appreciate about being a dedicated quizzer beyond mere competition and TV appearances. Gridley finds fulfillment in answering questions correctly, and the knowledge she gains benefits her career as a teacher. Mohan states that his hobby satisfies his innate curiosity about the world. The quizzing process improves attention to detail, as participants must read questions closely to avoid misnaming cities instead of countries.

For Schultz, this pursuit offers a soothing sense of consistency.

“I appreciate that it’s all centered around facts and truths in an era dominated by AI and misinformation. [fake news] He explains. Charles I will always be Charles I, today and 100 years from now.”

Schultz cherishes the life he has crafted around quizzes, for better or worse.

“I’ve never driven a car, I can’t cook, and I often lose my house keys… I think outside of quizzing, I seem to lack direction. My fate seems intertwined with this.”

Schultz is determined to retain his status as Australia’s number one quizzer, a title he has maintained since 2011.

“Usain Bolt, the fastest man alive, has dedicated his life to running; I aim to dedicate my life to quizzing,” he states. “After all, why not?”

Source: www.theguardian.com

UK police chief says that young people driven to violence by selecting and mixing fear online

The leader of counter-terrorism in Britain has expressed concern that more young people, including children as young as 10, are being lured towards violence through the “mix of fear” they encounter on the internet.

Vicky Evans, the deputy commissioner of the Metropolitan Police and senior national co-ordinator for counter-terrorism, noted a shift in radicalization, stating, “There has been a significant increase in interest in extremist content that we are identifying through our crime monitoring activities.”

Evans highlighted the disturbing trend of suspects seeking out material that either lacks ideology or glorifies violence from various sources. She emphasized the shocking and alarming nature of the content encountered by law enforcement in their investigations.

The search history reveals a disturbing fascination with violence, misogyny, gore, extremism, racism, and other harmful ideologies, as well as a curated selection of frightening content.

Detectives from the Counter-Terrorism Police Network are dedicating significant resources to digital forensics to apprehend young individuals consuming extremist material, a troubling trend according to Evans.

The government introduced measures to reform the Prevent system, aimed at deterring individuals from turning to terrorism. They are also reassessing the criteria for participation in Prevent to address individuals showing interest in violence without a clear ideological motive.

Evans emphasized the persistent terrorist threat in the UK, particularly in “deep, dark hotspots” that require urgent attention. Despite efforts to prevent terrorism, the UK has experienced several attacks in recent years.

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There have been 43 thwarted terrorist plots since 2017, with concerns over potential mass casualty attacks. The counter-terrorism community is also monitoring the situation in Syria for any potential threats from individuals entering or leaving the country.

Source: www.theguardian.com

Record high CO2 emissions driven by drought, fires, and use of fossil fuels

Wildfires in the tropics caused a slight increase in CO2 emissions, but most of that was due to burning fossil fuels

Carl De Souza/AFP/Getty Images

Carbon dioxide emissions from burning fossil fuels in 2024 are expected to exceed last year's record levels, dashing hopes that global warming emissions will peak this year.

“Reducing emissions is more urgent than ever, and the only way to do that is by significantly reducing fossil fuel emissions,” he said. Pierre Friedlingstein At the University of Exeter, UK.

This is according to the latest global carbon budget. reporta preliminary calculation of CO2 emissions to date, including projections until the end of the year, prepared by Friedlingstein and his colleagues. The announcement was made at the ongoing COP29 summit in Azerbaijan, where countries aim to set new fiscal targets to combat climate change.

Last year, some researchers predicted a peak in emissions in 2024, but the report found that anthropogenic CO2 emissions would reach a record high of 41.6 gigatonnes in 2024, up 2% from the 2023 record. It has been revealed that the number is expected to increase. Almost 90% of that total is made up of emissions from fossil fuel combustion. The remainder is primarily due to land changes caused by deforestation and wildfires.

Fossil fuel emissions will grow at 0.8 percent, half as much as in 2023, but still higher than the average growth rate over the past decade. “[The slower rate] This is a good sign, but we are still miles away from reaching our goal,” says Friedlingstein.

Despite a long-term downward trend, projected emissions from land-use change also increased this year, mainly due to drought-induced wildfires in the tropics. Part of this increase is also due to the collapse of terrestrial sinks of carbon in 2023, which typically removes about a quarter of annual CO2 emissions from the atmosphere. This absorption decreased by more than 40 percent last year and in early 2024 as global temperatures soared due to El Niño.

“2023 is an amazing demonstration of what can happen in a warmer world when El Niño droughts and fires combine to create record global temperatures,” he says. pep canadel He is a researcher at Australia's Commonwealth Scientific and Industrial Research Agency and co-author of this report. “Taken all together, the world's forests contributed almost a third less carbon dioxide from the atmosphere last year than they did in the previous decade.”

This will also increase emissions in 2024, but researchers expect this “land carbon sink” to largely recover as the warming effects of El Niño fade. “This is not a long-term collapse,” Friedlingstein says.

The report reveals that China's CO2 emissions, which emit almost a third of the world's total emissions, are projected to increase by only 0.2% in 2024 compared to 2023. . Canadel said this forecast of China's emissions has a large margin of error, so they may actually be stable or even declining. India's emissions have also slowed down from last year, increasing by just under 5%. In the US and EU, emissions continued to decline, albeit at a much slower pace than last year.

Increased demand for electricity to power air conditioners due to higher temperatures is also a key reason why fossil fuel emissions will continue to rise despite a massive build-up of renewable energy in 2024. He says: Neil Grant At the German think tank Climate Analytics. Whether it's from electric vehicles, data centers or manufacturing, “most people seem to be a little surprised by the level of electricity demand this year,” he says.

If emissions continue at this level, the world will exceed its carbon budget to limit warming to 1.5°C above pre-industrial levels within six years, and exceed its budget to limit warming to 2°C within 27 years, the report says. Pointed out. .

“We have to accelerate, accelerate, accelerate, accelerate the transition to renewable energy,” Candell said. “Climate change is like a slippery slope and we can keep falling. We need to slam on the brakes as hard as we can to avoid falling.”

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Source: www.newscientist.com

“The belief that the world is harsh has always driven me”: Hidetaka Miyazaki on his relentless pursuit of game development | Games

MaA lot has changed for Hidetaka Miyazaki in the past decade. In May 2014, he became president of FromSoftware, the Japanese game developer known for the dark fantasy blockbusters Demon’s Souls (2009), Dark Souls (2011), and Bloodborne (2015), all of which he directed himself. At the time, FromSoftware’s games were critically acclaimed and had a devoted following, but they sold poorly, only selling a few million copies each. But in 2022, the company released the gloriously imposing Elden Ring, a collaboration with fantasy author George R.R. Martin. Not only is it Miyazaki’s best work, it’s also his most popular to date, having sold 25 million copies to date. FromSoftware is no longer a niche company that produces cult hits; it’s now a company that produces bona fide blockbusters.

Has this changed Miyazaki’s thinking? Given how unforgiving and ruthless his game world is, it may not be surprising that he’s not the most optimistic person you’ll ever meet. “Elden Ring was in a league of its own in terms of success and critical acclaim, but what we try to do as a company is to never assume that it’s going to happen again in future games,” he told me in an interview in Los Angeles. “We never make decisions based on the assumption that because we did it once, it’s going to happen again. Allowing for this fairly conservative prediction gives us room to fail, which ultimately leads to better games and better decisions. Indirectly, I think that the assumption that we’re not going to make hits anymore, that conservative outlook, inspires and helps our game design.”

Miyazaki and the From Software team Comfortable. And even if they did, it’s hard to imagine they would have made a game as demanding, ambitious, and at times brutal.

Shadow of the Eldtree, a major expansion for Elden Ring, is released today. It takes players to a terrifying land of shadows, filled with amber skies, fearsomely grotesque monsters, and vengeful, forgotten warriors. From Software’s games are notoriously difficult, demanding extraordinary grit, determination, and drive from the player. Shadow of the Eldtree may be the hardest yet. Shadow of the Eldtree will put even those with 100 hours of Eldtree experience on the back foot. But it handsomely rewards persistence with a complex, fascinatingly opaque storyline and memorable battles against fearsome entities, from ghostly, leaf-adorned dragons to giant walking cages of human ash. The sense of accomplishment you feel when you finally conquer the unconquerable in a Miyazaki work remains unmatched.

The harsh nature of Eld Tree feels like a dump of cold water on me. Maybe it’s because I’ve been playing this game for 15 years, but Elden Ring feels just a little more approachable than other FromSoftware games. If you get stuck somewhere, you can move somewhere else, rather than charging at the same near-impossible boss over and over again. There are more options, and you can always try a different approach. It doesn’t feel like you’re having your face shoved in the dirt, as I said to Miyazaki. all At the time. Does he think this is part of the reason Elden Ring has garnered more fans than Dark Souls or the 2019 ninja fantasy Sekiro?

Miyazaki: “I’ve always felt that the world is a really harsh place.” Photo: FromSoftware/Sony

“That’s certainly part of the intention. Elden Ring gives players a lot more freedom because of its open-world nature and game design,” he muses. “At no point in the game did we want players to feel boxed in or overly limited in the scope of what they can do and experience in that world. It’s not a very gloomy, dark fantasy that we’ve become accustomed to in past FromSoftware games… The same starkness and coldness is still there, but we wanted to create beautiful moments. Conceptually, there’s a bit of high fantasy in there. It feels like you have a break, both in terms of the difficulty and the learning curve, but also in the world setting.”

Every new FromSoftware release brings up a bit of a discussion about difficulty and accessibility in modern games. Some developers choose to offer easier modes for less experienced or time-poor players. Sometimes they even remove enemies from the game entirely.

But this doesn’t suit a game like Elden Ring – difficulty is what the game is about, and reducing the difficulty stifles creativity.

“If you really want people all over the world to play your game, you can just make the difficulty lower and lower, but that wasn’t the right approach,” Miyazaki said. “If we had taken that approach, I don’t think the game would have turned out the way it did, because the sense of accomplishment that players get from overcoming these hurdles is a very fundamental part of the gaming experience. If you lower the difficulty, you take away that joy. I think it ruins the game itself.”

For Miyazaki, improving through failure isn’t just a game design principle, it’s something of a personal philosophy. As president, he creates a work environment where developers can experiment and ideas don’t get bogged down. No one project dictates a developer’s entire future. His big break came in 2006, when he was put in charge of managing a struggling fantasy project at FromSoftware. The game would become Demon’s Souls. “I thought if I could figure out how to manage the game, I could turn it into whatever I wanted,” he told The Guardian’s Simon Parkin in 2015. “The best part was that if my idea failed, nobody cared. It was already a failure.”

“To be honest, I don’t think it’s that different now than it was 15 years ago when we were making Demon’s Souls,” he laughs when I remind him of this. “What I try to foster in our environment is to make sure that young directors and game designers have the same kind of experience that I had when I was working on Demon’s Souls, that if this game fails, it’s not the end of the world. I think that mentality and attitude helps people grow.”

Mr. Miyazaki is different. The first time I met him In 2011“I’ve always been a big fan of the game,” he said at Tokyo Game Show, just before the release of Dark Souls, the game that would thrust him into the spotlight. Quiet and soft-spoken, his eyes glued to the carpet, he says he used to shy away from being the center of attention. But now he’s much more confident and comfortable talking about both business and game design. When he thinks, he looks up at the ceiling, not down at the floor. He’s now a father to a young daughter and leads a company. And like players of Dark Souls and Elden Ring, he’s emerged as a more capable person.

However, he remains as hands-on as ever as a game designer. “Regardless of my title or position in the company, there is always the joy and satisfaction I get from making games,” he says. “I enjoy helping to nurture and develop young directors who will take the company to the next level. But sitting in an administrative office all day is not my style. I want to really get my hands dirty and continue to make games together, and through that, pass on my process to other generations of talent. I’ve held the title of president for almost 10 years now, but I’d say about 95% of my work and time at the company is devoted to game making and game direction. In this ratio, I’d say I’ve only had about 6 months of actual experience as an executive!”

The world is also very different from when Demon’s Souls was a big hit. I think the reason why more people are resonating with the work of Hayao Miyazaki and From Software is because we’ve become accustomed to a feeling of helplessness. For those who have lived through the last 15 years of pandemics, political turmoil, and looming climate disaster, bleak situations are not so foreign. What Elden Ring gives us is a glimmer of hope that, perhaps, if we are strong and persistent enough, we can triumph against all odds.

“A lot of From Software’s games throw you into this barren wasteland and make it a very harsh, harsh, cold experience… I don’t think what we’ve done in the game has changed, but maybe the world will change. Have “The last few years have been exceptional in terms of what’s going on around us, but even before that I felt the world was a very harsh place. I’ve always lived with that worldview, that value system. So this idea of ​​being cast out into the wilderness and planting the seeds of growth feels almost universal to me. Maybe more people are discovering that now.”

I think what a lot of people miss in From Software’s games is a sense of hope. First Interview In a 2010 email exchange with Miyazaki, he told me about the origins of Demon’s Souls’ unusual multiplayer, in which players can summon anonymous helpers to help them get through a particularly frightening area or boss encounter. He was driving up a hill in the winter when everyone got stuck. It wasn’t until everyone in the back started helping by pushing the car in front to the top of the hill that someone finally made it. He called it a “connection of mutual aid between fickle people,” adding, “Oddly enough, that event will probably stick in my mind for a long time. It sticks for a long time precisely because it was so fleeting.”

Elden Ring is filled with these fleeting moments of beauty and friendship, and they’re all the more meaningful because they’re so rare. In a harsh world, moments of respite are precious.

“If I look deeply into my history, there are definitely experiences that have influenced my identity, the worldview that drives me to make games,” Miyazaki said. “I’ve never taken a step back and thought about what triggered it, but there’s definitely something that’s the reason these are the types of games I want to see and make. If I looked in the mirror and took a hard look at myself… if I went on a soul-searching journey to find out why, I might be disappointed in myself. It would force me to face how boring and ordinary I am. Maybe I’m intentionally avoiding that. That’s what keeps the creativity flowing.”

Source: www.theguardian.com

Study finds that Jupiter’s polar lows are driven by processes reminiscent of those on Earth

Planetary scientists first became aware of the connection between Earth and Jupiter in 2018, when they noticed striking similarities in images of Jupiter's giant cyclones and turbulent ocean currents. In 2022, they Analyzed High-resolution infrared image of a cyclone on Jupiter taken by NASA's Juno spacecraft. Analysis reveals that a type of convection similar to that seen on Earth helps sustain Jupiter's storms, which can be thousands of miles wide and last for years. The 2022 study focused directly on Jupiter's cyclones, but the authors also saw thin tendrils called filaments in the spaces between the vortices of gas. These filaments have analogues on Earth, and the authors used Juno's detailed images to study whether this similarity to Earth's oceanic and atmospheric processes is merely superficial.



This composite image, created from data collected by the JIRAM instrument on NASA's Juno spacecraft, shows a central cyclone at Jupiter's north pole and eight surrounding cyclones. JIRAM collects data in infrared, and the colors in this composite represent radiated heat. The yellow (thinnest) clouds have a brightness temperature of about -9 degrees Fahrenheit (-13 degrees Celsius), while the dark red (thickest) clouds have a brightness temperature of about -181 degrees Fahrenheit (83 degrees Celsius). Image credit: NASA / JPL-Caltech / SwRI / ASI / INAF / JIRAM.

Fronts are often featured in weather forecasts (for example, cold fronts and storm fronts) and apply to both gases and liquids.

A front is a boundary between masses of gas or liquid that have different densities due to differences in properties such as temperature.

In the ocean, fronts can also form due to differences in salinity, which, along with temperature, affects the density of seawater.

The main characteristic of a front is that its leading edge is characterized by strong vertical speed and can generate wind and currents.

To understand the role of the filaments clearly visible during Jupiter's cyclones in the Juno images, Dr. Leah Siegelman of the Scripps Institution of Oceanography and Dr. Patrice Klein of the California Institute of Technology examined a series of infrared images from Juno.

The series of images was taken 30 seconds apart of Jupiter's north polar region.

Because the images were taken in infrared, the team was able to calculate the temperature, finding that brighter areas were warmer and darker areas were cooler.

On Jupiter, the hotter parts of the atmosphere correspond to thin clouds, while the cooler parts are covered by thicker clouds that block more of the heat emanating from Jupiter's superheated core.

The researchers then tracked the movement of the clouds and filaments over the 30-second intervals between photos to calculate horizontal wind speeds.

These two pieces of information allowed the scientists to apply methods from ocean and atmospheric science to Jupiter to calculate vertical wind speeds that correspond to the temperatures and horizontal wind speeds the researchers derived from the images.

Calculating vertical wind speeds, they found that Jupiter's filaments do in fact move like Earth's fronts.

The vertical wind speeds at the edges of Jupiter's fronts also mean that the fronts transport energy in the form of heat from the planet's hot interior to the upper atmosphere, potentially generating large cyclones.

Although convection is the primary driving force, fronts account for a quarter of the total kinetic energy powering Jupiter's cyclones and 40 percent of the vertical heat transport.

“These cyclones at Jupiter's poles have continued since they were first observed in 2016,” Dr Siegelman said.

“These filaments between the larger vortices are relatively small, but they are a key mechanism for maintaining cyclones.”

“It's intriguing that fronts and convection exist and influence Earth and Jupiter, suggesting that these processes may also exist on other turbulent fluid bodies in the universe.”

“Jupiter's enormous scale and Juno's high-resolution images allow us to more clearly visualize how small-scale phenomena like fronts connect with larger-scale phenomena like cyclones and the atmosphere. These connections are often difficult to observe on Earth because they are much smaller and more ephemeral.”

“But the long-awaited new satellite, SWOT, will make observing these ocean phenomena much easier.”

“There's a kind of cosmic beauty in knowing that these physical mechanisms on Earth exist on other planets far, far away.”

Team paper Published in the journal Natural Physics.

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L. Siegelman & P. ​​Klein. Frontogenesis at high latitudes on Jupiter. National Physical SocietyPublished online June 6, 2024; doi: 10.1038/s41567-024-02516-x

Source: www.sci.news

New research indicates that woolly rhinos may have been driven to extinction by early humans

Extinction of Woolly rhinoceros (Coelodonta Antiquitatis) This species, which lived at the beginning of the Holocene Epoch, remains shrouded in mystery, with conflicting evidence as to its causes and dynamics. A team of paleontologists led by scientists from the University of Adelaide and the University of Copenhagen has used computationally intensive modelling techniques and extensive paleontological and ancient DNA information to uncover why and how this enigmatic species went extinct.

Woolly rhinoceros (Coelodonta Antiquitatis) was once widespread across northern and central Eurasia but became extinct about 10,000 years ago. Image by Mauricio Antón.

The woolly rhinoceros is an iconic member of the giant steppe fauna of central and northern Eurasia, originating from the Tibetan Plateau approximately 2.5 million years ago.

It is a cold-adapted species with thick skin and long fur, and its body size is comparable to that of modern mammals. African white rhinoceros (Ceratotherium simum).

Based on fossil chronology, the woolly rhino is estimated to have become extinct by 13,900 years ago, despite having survived multiple glacial and interglacial cycles during the Pleistocene.

However, recent discovery of woolly rhinoceros DNA in early Holocene deposits suggests a later extinction date of 9,800 years ago. This young dating is subject to debate, but is unlikely to be due to redeposition of DNA.

“Using computer models, fossils and ancient DNA, we have traced the population history of woolly rhinoceros across Eurasia over 52,000 years, at a resolution previously thought impossible,” said Dr Damian Fordham, from the University of Adelaide.

“This suggests that a combination of decreasing temperatures beginning 30,000 years ago and small-scale but continuing hunting by humans caused the woolly rhino's range to shrink southwards, confining it to isolated and rapidly degraded habitat at the end of the last ice age.”

“As the Earth thawed and temperatures rose, woolly rhino populations were unable to colonize key new habitats in northern Eurasia, causing destabilization and collapse, ultimately leading to extinction.”

The new research contradicts previous studies that found humans were not responsible for the woolly rhino's extinction, despite the animal coexisting with humans for tens of thousands of years before its disappearance.

“The demographic responses revealed by our analysis have a much higher resolution than previously captured in genetic studies,” said Professor Eline Lorenzen from the University of Copenhagen.

“This allowed us to pinpoint key interactions between woolly rhinos and humans and document how these have changed over time and space.”

“One of these largely overlooked interactions is persistent, low-level hunting by humans, presumably for food.”

“Humans pose similar environmental threats today,” the researchers said.

“Large animal populations have been forced into fragmented and suboptimal habitats by overhunting and changes in human land use.”

“Of the 61 species of large terrestrial herbivores weighing more than one tonne that lived during the Late Pleistocene, only eight survive today, five of which are rhinos.”

“Our results show how climate change and human activities can lead to the extinction of large animals,” said Professor David Nogus Brabo from the University of Copenhagen.

“This understanding is crucial for developing conservation strategies to protect species currently at risk of extinction, such as vulnerable rhinos in Africa and Asia.”

“Studying past extinctions can provide valuable lessons for conserving Earth's remaining large animals.”

of study Appeared in Proceedings of the National Academy of Sciences.

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Damien A. Fordham others2024. 52,000 years of woolly rhino population dynamics reveal mechanisms of extinction. PNAS 121(24):e2316419121; doi:10.1073/pnas.2316419121

Source: www.sci.news

Unexpected star formation driven by dwarf galaxies discovered

A University of Michigan astronomer, Sally Ooi, led a study on the star-forming regions of the host galaxy NGC 2366, a typical dwarf irregular galaxy. This study was credited to the Observatorio de Calar Alto, J. van Eymeren (AIRUB, ATNF), and Á.R. López Sánchez. As it turns out, dwarf galaxies such as NGC 2366 experience a delay in expelling gas, which allows for the star-forming regions to hold onto gas and dust longer, promoting the formation and development of more stars. This delays the onset of strong superwinds by 10 million years, resulting in more active star formation. This discovery was published in the Astrophysical Journal.

This delay offers astronomers a unique opportunity to study a scenario similar to the dawn of the universe, when ultraviolet light begins to ionize hydrogen, changing the universe from opaque to transparent. By observing low-metallicity dwarf galaxies with large amounts of ultraviolet radiation, scientists can gain insight into these early stages of the universe. The use of new technology from the Hubble Space Telescope allows researchers to observe the light of triple ionized carbon in these galaxies. This observational evidence supports the delayed onset of strong superwinds and a greater amount of ultraviolet radiation in these galaxies.

Thanks to these discoveries, scientists may gain a better understanding of the nature of galaxies seen at the dawn of the universe. This information could be important for the upcoming James Webb Space Telescope. The study was published in the Astrophysical Journal and the Astrophysics Journal Letter. The research team involved in these studies included Michelle C. Jecmen, MS Oey, Amit N. Sawant, Ashkviz Danekar, Sergiy Silic, Linda J. Smith, Jens Melinder, Klaus Reiter, Matthew Hayes, Anne E. Jascott, Daniela Calzetti, Yu-Hua Chu, and Bethan L. James. Ultimately, these findings provide valuable insight into the formation and development of stars in low-metallicity dwarf galaxies.

Source: scitechdaily.com