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| BrettPette | Дата: Воскресенье, 30.03.2025, 01:42 | Сообщение # 811 |
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Группа: Гости
| PhiWave Festival подарував моїм друзям незабутні емоції. Вони ділилися історіями про музику Nina Kraviz і Tale Of Us, які вражали своїм професіоналізмом і креативністю. Танцпол із золотими спіралями виглядав як футуристична сцена з фільму, а лаунж-зона дозволяла відпочити та насолодитися моментом. Це справжня магія, яку хочеться відчути самому. Більше про фестиваль можна дізнатися на <a href=https://phi.trancereality.mk.ua/>офіційному сайті</a>.
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| Kevininots | Дата: Воскресенье, 30.03.2025, 01:47 | Сообщение # 812 |
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Группа: Гости
| Why there’s a huge collection of vintage cars stored in the middle of the desert
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Back at the turn of the 21st century, Qatar was a country with few cultural attractions to keep visitors and residents entertained. Yet the Sheikh Faisal Bin Qassim Al Thani Museum — known as the FBQ Museum — was a place that most people visited as an alternative to the then-still rather ramshackle National Museum of Qatar.
You had to make an appointment, and drive out into the desert, getting lost a few times along the way, but then you were welcomed to the lush Al Samriya Farm with a cup of tea and some cake. The highlight was being allowed into a space crammed full with shelves and vitrines holding all sorts of eclectic artifacts from swords to coins — with the odd car and carriage standing in the grounds.
It wasn’t necessarily the kind of museum you’d find elsewhere in the world, but it was definitely a sight that needed seeing.
Today, it has grown and now claims to be one of the world’s largest private museums. It holds over 30,000 items, including a fleet of traditional dhow sailboats, and countless carpets. There’s also an entire house that once stood in Damascus, Syria.
There are archaeological finds dating to the Jurassic age, ancient copies of the Quran, a section that details the importance of pearling within Qatar’s history, and jewelry dating to the 17th century.
There are also items from 2022’s FIFA World Cup in Qatar including replica trophies, balls used in the games, entry passes, football jerseys and even shelves full of slightly creepy dolls and children’s plush animals.
Some of the more disturbing exhibits include various items of Third Reich paraphernalia in the wartime room, and, strangely enough, several showcases of birds’ legs with marking rings on them. Basically, whatever you can think of, you have a very good chance of finding it here.
Rumor even has it that behind a locked door is a room filled with the late Princess Diana’s dresses and other memorabilia, accessible only to a select few visitors. Another door hides a room, no longer open to the public, filled with collectibles of the late Saddam Hussein.
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| DouglasLok | Дата: Воскресенье, 30.03.2025, 03:22 | Сообщение # 813 |
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Группа: Гости
| <p dir="ltr"><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXfWfr2oZ4MBzA0KZV4-V56lX9AipK-amWH1lZQGpdsQo0tqN9U-C85BdoNR8qv37DOg6Ap0CF3nTGxGkjJbxp_YlqjNK3KhM0F4aGeZ6dDd2CUSVwLof4yJP7217BBQ9Cfnj1aXdQ?key=TguaoU7ACTMvT52YffJORAIH" alt="" width="602" height="601"></p><p dir="ltr"> Hoy en día, cuando el mundo se enfrenta a incertidumbres financieras e inflación, elegir el instrumento de inversión adecuado se vuelve vital. Entre los numerosos activos digitales y criptomonedas, destaca el <a href="https://uniteto.live/es">UTLH</a>, un token creado específicamente para resolver tareas financieras y personales concretas. En este artículo, analizaremos en detalle por qué el UTLH debe ser parte de su cartera de inversiones.</p><p dir="ltr">¿Qué es el token UTLH?<br> El token UTLH es un activo digital basado en la blockchain Binance Smart Chain (BEP-20), creado específicamente para los miembros del club internacional privado de empresarios e inversores UTL Club. No es solo otra criptomoneda, sino una herramienta multifuncional con aplicaciones reales en el marco del programa único de Asistencia Financiera Universal (UFA).</p><p dir="ltr">¿Por qué es el momento adecuado para prestar atención al UTLH?<br> En la realidad económica actual, los créditos bancarios tradicionales son menos accesibles, las tasas aumentan y el nivel de inflación crece. UTLH ofrece una alternativa: financiación rentable sin burocracia, tasas de interés bajas y un ingreso pasivo accesible. Aquí hay algunas razones por las cuales UTLH está atrayendo a cada vez más inversores:</p><ul><li dir="ltr"><p dir="ltr">Emisión limitada: solo se han emitido 957,315 tokens. Cuantos menos tokens existan, mayor será su valor a largo plazo.</p></li><li dir="ltr"><p dir="ltr">Rol activo en el programa UFA: el token se utiliza como activo colateral, lo que asegura una demanda constante y hace que su valor sea estable.</p></li><li dir="ltr"><p dir="ltr">Staking de alto rendimiento: los poseedores reciben un 24% anual (2% mensual), lo que lo diferencia de otros instrumentos de inversión.</p></li></ul><p dir="ltr">Programa único UFA: una nueva palabra en financiación<br> El programa de Asistencia Financiera Universal (UFA) es un sistema de financiación preferencial que permite a los miembros del club obtener fondos para cualquier propósito con tasas de interés bajas. El token UTLH es un componente clave de este programa, funcionando como garantía, lo que garantiza transparencia y fiabilidad en las transacciones.<br> Esto significa que los poseedores de UTLH pueden:</p><ul><li dir="ltr"><p dir="ltr">Obtener financiación rápidamente sin garantías en bienes inmuebles;</p></li><li dir="ltr"><p dir="ltr">Utilizar los tokens para adquirir activos, iniciar negocios o resolver problemas financieros personales;</p></li><li dir="ltr"><p dir="ltr">Minimizar los trámites burocráticos y los costos de tiempo al solicitar un préstamo.<br> Así, el UTLH resuelve tareas financieras concretas y facilita el acceso a fondos, manteniendo al mismo tiempo total transparencia y seguridad.</p></li></ul><p dir="ltr">Fiabilidad y estabilidad gracias a la emisión limitada y el mecanismo de quema<br> La emisión limitada y los mecanismos de quema regular de los tokens UTLH permiten mantener la estabilidad y aumentar de manera constante su precio. Cuantos menos tokens estén disponibles, mayor será su valor en el mercado. Esto convierte al UTLH en una excelente herramienta no solo para obtener ingresos pasivos, sino también para proteger el capital contra la inflación.</p><p dir="ltr">Ingreso pasivo sencillo a través de staking<br> Hoy en día, muchos inversores buscan una forma confiable y sencilla de aumentar su capital. UTLH ofrece la herramienta ideal: un programa de staking que garantiza un ingreso estable:</p><ul><li dir="ltr"><p dir="ltr">Depósito mínimo de solo 1 UTLH.</p></li><li dir="ltr"><p dir="ltr">Rentabilidad garantizada: 24% anual (2% mensual).</p></li><li dir="ltr"><p dir="ltr">Devolución completa del depósito después de 12 meses con los intereses acumulados.<br> Esto es mucho más alto que la rentabilidad de los depósitos bancarios tradicionales, lo que hace que el staking de UTLH sea una herramienta atractiva para inversores de cualquier nivel de experiencia.</p></li></ul><p dir="ltr">Comunidad internacional poderosa<br> Detrás del token UTLH hay una comunidad activa de empresarios e inversores que cuenta con más de 160,000 miembros. No son solo inversores pasivos, sino personas activas y decididas que:</p><ul><li dir="ltr"><p dir="ltr">Comparten experiencias y conocimientos;</p></li><li dir="ltr"><p dir="ltr">Participan en proyectos conjuntos e iniciativas;</p></li><li dir="ltr"><p dir="ltr">Se apoyan mutuamente para lograr la independencia financiera.<br> Una comunidad como esta es clave para el crecimiento estable y la popularidad del token.</p></li></ul><p dir="ltr">Casos reales de éxito<br> La mejor prueba de la efectividad del UTLH son los casos reales:</p><ul><li dir="ltr"><p dir="ltr">Compra de inmuebles: muchas familias han adquirido propiedades sin hipotecas tradicionales, utilizando el programa UFA y el token UTLH.</p></li><li dir="ltr"><p dir="ltr">Desarrollo de negocios: empresarios han obtenido préstamos rentables para iniciar o expandir sus negocios, usando los tokens como garantía.</p></li><li dir="ltr"><p dir="ltr">Ingreso pasivo: miles de personas han aumentado su capital simplemente manteniendo tokens en staking, ganando de manera estable y sin riesgos.</p></li></ul><p dir="ltr">5 razones para incluir UTLH en su cartera hoy mismo:</p><ul><li dir="ltr"><p dir="ltr">Protección contra la inflación gracias a la emisión limitada.</p></li><li dir="ltr"><p dir="ltr">Ingreso pasivo garantizado a través de un staking rentable.</p></li><li dir="ltr"><p dir="ltr">Aplicación real en el programa UFA, lo que asegura una demanda constante.</p></li><li dir="ltr"><p dir="ltr">Seguridad y transparencia gracias a la blockchain Binance Smart Chain.</p></li><li dir="ltr"><p dir="ltr">Apoyo activo de una comunidad global de personas exitosas y experimentadas.</p></li></ul><p>Conclusión: UTLH – un nuevo estándar de independencia financiera<br> El UTLH es más que solo un activo digital. Es una herramienta que responde a los retos reales del mundo financiero moderno. Ha sido creado para que cualquier persona pueda alcanzar fácilmente la independencia financiera, proteger su capital contra riesgos e inflación, obtener financiación favorable e ingresos pasivos estables.<br> Hoy es el momento perfecto para incluir el token UTLH en su cartera de inversiones y dar el paso hacia la libertad financiera. ¡No deje pasar la oportunidad, invierta en su futuro hoy mismo!</p><p dir="ltr"> </p>
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| Chestercoisp | Дата: Воскресенье, 30.03.2025, 03:28 | Сообщение # 814 |
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Группа: Гости
| Curiosity has maintained pristine pieces of the Cumberland sample in a “doggy bag” so that the team could have the rover revisit it later, even miles away from the site where it was collected. The team developed and tested innovative methods in its lab on Earth before sending messages to the rover to try experiments on the sample.
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In a quest to see whether amino acids, the building blocks of proteins, existed in the sample, the team instructed the rover to heat up the sample twice within SAM’s oven. When it measured the mass of the molecules released during heating, there weren’t any amino acids, but they found something entirely unexpected.
An intriguing detection
The team was surprised to detect small amounts of decane, undecane and dodecane, so it had to conduct a reverse experiment on Earth to determine whether these organic compounds were the remnants of the fatty acids undecanoic acid, dodecanoic acid and tridecanoic acid, respectively.
The scientists mixed undecanoic acid into a clay similar to what exists on Mars and heated it up in a way that mimicked conditions within SAM’s oven. The undecanoic acid released decane, just like what Curiosity detected.
Each fatty acid remnant detected by Curiosity was made with a long chain of 11 to 13 carbon atoms. Previous molecules detected on Mars were smaller, meaning their atomic weight was less than the molecules found in the new study, and simpler.
“It’s notable that non-biological processes typically make shorter fatty acids, with less than 12 carbons,” said study coauthor Dr. Amy Williams, associate professor of geology at the University of Florida and assistant director of the Astraeus Space Institute, in an email. “Larger and more complex molecules are likely what are required for an origin of life, if it ever occurred on Mars.”
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| Rogeritarf | Дата: Воскресенье, 30.03.2025, 03:37 | Сообщение # 815 |
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Группа: Гости
| Siham Haleem, a private tour guide for 15 years, says that Doha now has many world-class, modern museums — the National Museum of Qatar being a firm personal favorite. And yet he says that visiting Sheikh Faisal’s museum should still be on everybody’s to-do list.
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“For those eager to learn about Qatar’s — and the region’s — heritage and beyond, the museum is an ideal destination,” he says. “Personally, I’m captivated by the car collection, the fossils, and especially the Syrian house, painstakingly transported and reassembled piece by piece.”
Stephanie Y. Martinez, a Mexican-American student mobility manager at Texas A&M University in Qatar likes the museum so much she includes it on all of her itineraries for students visiting from the main campus in Texas.
“The guided tours are very detailed, and the collections found at the museum have great variety and so many stories to unfold,” she says. “Truly, the museum has something to pique everyone’s interest. My favorites are the cars and the furniture exhibits showcasing wood and mother-of-pearl details. Definitely one of my favorite museums in Qatar, every time I visit I learn something new.”
Raynor Abreu, from India, also had praise for the unusual and immense collection.
“Each item has its own story, making the visit even more interesting,” he says. “It’s also impressive to know that Sheikh Faisal started collecting these unique pieces when he was very young. Knowing this makes the museum even more special, as it reflects his lifelong passion for history and culture.”
It takes time and dedication to truly examine the many collections within the museum — especially since most of them are simply on display without explanation.
Eclectic it may be, but it’s hard to fault the determination of Sheikh Faisal, who has brought together items that tell the story of Qatar and the Middle East.
Sarah Bayley, from the UK, says she visited the museum recently with her family, including 16 and 19-year-old teenagers, and was won over by its sheer eccentricity.
“Amazing. Loved it. It is a crazy place.”
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| JesseSon | Дата: Воскресенье, 30.03.2025, 03:56 | Сообщение # 816 |
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Группа: Гости
| Josh Giddey hits halfcourt buzzer-beater over LeBron James to cap wild finale as the Bulls stun the Lakers
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Josh Giddey hit a game-winning, halfcourt buzzer-beater over LeBron James as the Chicago Bulls stunned the Los Angeles Lakers in one of the wildest endings to an NBA game you are ever likely to see.
Trailing 115-110 with 12.6 seconds remaining, Giddey’s inbound pass found Nikola Vucevic, who pushed the ball to a wide-open Patrick Williams for a corner three-pointer.
James then fluffed the Lakers inbound pass from the baseline, allowing Giddey to steal the ball and find Coby White for a second Bulls triple in quick succession to put Chicago up 116-115 with 6.1 seconds remaining.
Austin Reaves then made a driving layup to put the Lakers ahead 117-116 with 3.3 seconds left, but the game wasn’t done yet.
With no timeouts remaining, Giddey inbounded the ball to Williams from the baseline, got the pass back, took one dribble and launched a shot from beyond halfcourt.
Supporters in the stands seemed frozen in anticipation as the ball sailed through the air, and the United Center then erupted as it fell through the net. After the dramatic win, Giddey found himself being swarmed by his teammates.
“Special moment to do it with these guys, this team,” Giddey said, per ESPN. “We’ve shown over the last month to six weeks that we can beat anybody. The way we play the game, I think it wears people down.
“We get up and down. We run. We put heat on them to get back. A lot of veteran teams don’t particularly want to get back and play in transition.”
Giddey later told the Bulls broadcast that he’d “never made a game-winner before.”
The ending capped an incredible couple of games for the Lakers, who had themselves won their last game against the Indiana Pacers on Wednesday with a buzzer-beating tip-in from James.
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| JasonSam | Дата: Воскресенье, 30.03.2025, 04:33 | Сообщение # 817 |
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Группа: Гости
| Arctic auroras
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For getting around during winter, the Inuit here nowadays prefer snowmobiles, although they still keep their sled dogs. During winter they’ll offer intrepid visitors, wrapped up warm against the deep-freeze temperatures, dog-sledding jaunts. These can last either an hour or be part of expeditions over several days, sometimes with the added experience of learning how to build an igloo. Sisimiut on the west coast and Tasilaq in the southeast are active winter centers for dog sledding.
Winter’s most stellar attraction, though, is northern lights watching. With little urban light pollution, Greenland is a dark canvas for spectacular displays, and aurora borealis-watching vacations are becoming more popular.
Staying outdoors, Greenland is developing a reputation among adventure enthusiasts: from long-distance skiing expeditions and heliskiing on the icecap to hiking the 100-mile-long Arctic Circle Trail from Kangerslussuaq, where firearms need to be carried for warning shots in case of polar bear encounters.
Life is definitely changing here. The climate crisis is eating away at its icecap and Greenland may well end up as a pawn in a game of geopolitical chess. But for now, the bright glare of international attention should shine a favorable light on one of the wildest travel destinations on Earth.
Travel writer Mark Stratton is an Arctic specialist who has traveled to Greenland six times and counting. He’s marveled at the aurora borealis, sailed to Disko Island, dog-sledded with the Inuit, and once got stuck in an icefloe.
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| Lloydgut | Дата: Воскресенье, 30.03.2025, 04:45 | Сообщение # 818 |
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Группа: Гости
| Tesla is bringing its electric cars to oil-rich Saudi Arabia amid falling global sales
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Tesla will start selling its electric vehicles in Saudi Arabia, entering the Gulf region’s largest economy as the company’s global sales are sliding and CEO Elon Musk courts controversy with his role in the US government.
The carmaker announced Wednesday that it would host a launch event in the kingdom on April 10, where it will showcase its EVs. Attendees will also have the chance to “experience the future of autonomous driving with Cybercab and meet Optimus, our humanoid robot, as we showcase what’s next in AI and robotics,” Tesla (TSLA) said.
Tesla may struggle to gain market share in oil-rich Saudi Arabia as EVs make up a little over 1% of all car sales in the country, according to a report by consultancy PwC published in September.
Tesla’s entry into the new market comes as the company fights battles on several fronts.
Last year, it recorded the first annual decline in sales in its history as a public company, posting a drop of 1%.
The company is facing intensifying competition in China, the world’s largest auto market. On Tuesday, BYD, a Chinese maker of electric and hybrid cars, reported $107 billion in annual sales for 2024, beating the near-$98 billion notched by Tesla.
And last week, BYD unveiled an ultra-fast charging system, which it said was capable of adding 250 miles (402 km) of range in just five minutes, easily outdoing Tesla’s charging technology. Tesla’s Superchargers take 15 minutes to charge an EV, providing a range of 200 miles.
Tesla has also suffered slumping sales in Europe. In February, the carmaker sold around 40% fewer vehicles on the continent compared with the same month in 2024, according to the European Automobile Manufacturers’ Association.
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| Jamesheimi | Дата: Воскресенье, 30.03.2025, 04:53 | Сообщение # 819 |
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Группа: Гости
| Wellness perfectionism doesn’t exist. Focus on these sustainable habits
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ou’re scrolling through your phone when you stumble upon the next viral trend: an influencer claiming that following their incredibly strict diet will help you achieve their jaw-dropping physique. Or you see a fresh-faced runner swearing you can run a marathon without any training — just like they did.
Whether or not you’re actively searching for wellness advice, it’s nearly impossible to avoid hearing about the latest health craze making bold guarantees of transformation.
As you wonder if these claims hold any truth, you might also question why people often feel motivated to dive into intense challenges — when seemingly simple habits, such as getting enough sleep or eating more vegetables, often feel much harder to tackle.
Many of us are drawn to these extreme challenges because we’re craving radical change, hoping it will help prove something to ourselves or to others, experts say.
“We always see these kinds of challenges as opportunities for growth, particularly if we’re in a phase of our life where we’ve let ourselves go,” said Dr. Thomas Curran, associate professor of psychology at the London School of Economics and Political Science and an expert on perfectionism. “Maybe we feel that we need to be healthier, or we just had a breakup or (major) life event.”
With social media amplifying these movements, it’s easy to see why people are increasingly drawn to the idea of achieving the “perfect” version of themselves. But before jumping into a new wellness challenge, it’s important to take a moment, reflect on your goals, and consider where you’re starting from.
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| Robertinift | Дата: Воскресенье, 30.03.2025, 05:52 | Сообщение # 820 |
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Группа: Гости
| Family affair
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Americans Brittany and Blake Bowen had never even been to Ecuador when in 2021 they decided to move to the South American country with their four children.
Tired of “long commutes and never enough money” in the US, the Bowens say they love their new Ecuadorian life. “We hope that maybe we’ll have grandkids here one day.”
Erik and Erin Eagleman moved to Switzerland from Wisconsin with their three children in 2023.
“It feels safe here,” they tell CNN of their new outdoorsy lifestyle in Basel, close to the borders with France and Germany. Their youngest daughter even walks to elementary school by herself.
For adventures with your own family, be it weekend breaks or something longer-term, our partners at CNN Underscored, a product review and recommendations guide owned by CNN, have this roundup of the best kids’ luggage sets and bags.
Starry, starry nights
For close to 100 years, Michelin stars have been a sign of culinary excellence, awarded only to the great and good.
Georges Blanc, the world’s longest-standing Michelin-starred restaurant, has boasted a three-star rating since 1981, but this month the Michelin guide announced that the restaurant in eastern France was losing a star.
More culinary reputations were enhanced this week, when Asia’s 50 best restaurants for 2025 were revealed. The winner was a Bangkok restaurant which is no stranger to garlands, while second and third place went to two Hong Kong eateries.
You don’t need to go to a heaving metropolis for excellent food, however. A 200-year-old cottage on a remote stretch of Ireland’s Atlantic coast has been given a Michelin star. At the time of awarding, Michelin called it “surely the most rural” of its newest winners.
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| KennethBoope | Дата: Воскресенье, 30.03.2025, 05:54 | Сообщение # 821 |
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Группа: Гости
| Challenging our perceptions of ‘perfection’
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With health influencers raising the bar for success, the wellness space now often feels like a performative space where people strive to showcase peak physical and mental strength.
While seeing others’ achievements can be motivating, it can also be discouraging if your progress doesn’t match theirs.
Each person is chasing the perfect version of themselves — whether it’s a body or a lifestyle — which is dangerous because this is typically an impossible or dangerous version to achieve, Curran said. He added that this type of comparison creates a dangerous cycle in which people constantly feel dissatisfied with their own progress.
“It’s a fantasy in many ways, and once you start chasing after it, you constantly find yourself embroiled in a sense of doubt and deficit,” he said.
Curran also noted that wellness challenges can be particularly damaging for women who struggle with perfectionism, as they tend to be bombarded with impossible beauty standards and societal expectations.
Renee McGregor, a UK-based dietitian who specializes in eating disorders and athlete performance, encourages people to approach wellness trends with curiosity and skepticism. That’s because some influencers and celebrities could be promoting products because there’s a financial benefit for them.
“The thing to ask yourself about the person you’re taking advice from is what do they gain from it?” McGregor said. “If they are going to gain financially, then you know that they (could be willing) to sell you a lie.”
Whether you want to try a new challenge or product that promises amazing results, McGregor suggests doing your research and seeking diverse perspectives, including consulting with doctors when possible.
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| DavidExinc | Дата: Воскресенье, 30.03.2025, 06:39 | Сообщение # 822 |
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Группа: Гости
| Привет всем!
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| AnthonyBef | Дата: Воскресенье, 30.03.2025, 06:53 | Сообщение # 823 |
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Группа: Гости
| Scientists redid an experiment that showed how life on Earth could have started. They found a new possibility
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In the 1931 movie “Frankenstein,” Dr. Henry Frankenstein howling his triumph was an electrifying moment in more ways than one. As massive bolts of lightning and energy crackled, Frankenstein’s monster stirred on a laboratory table, its corpse brought to life by the power of electricity.
Electrical energy may also have sparked the beginnings of life on Earth billions of years ago, though with a bit less scenery-chewing than that classic film scene.
Earth is around 4.5 billion years old, and the oldest direct fossil evidence of ancient life — stromatolites, or microscopic organisms preserved in layers known as microbial mats — is about 3.5 billion years old. However, some scientists suspect life originated even earlier, emerging from accumulated organic molecules in primitive bodies of water, a mixture sometimes referred to as primordial soup.
But where did that organic material come from in the first place? Researchers decades ago proposed that lightning caused chemical reactions in ancient Earth’s oceans and spontaneously produced the organic molecules.
Now, new research published March 14 in the journal Science Advances suggests that fizzes of barely visible “microlightning,” generated between charged droplets of water mist, could have been potent enough to cook up amino acids from inorganic material. Amino acids — organic molecules that combine to form proteins — are life’s most basic building blocks and would have been the first step toward the evolution of life.
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| HerbertCeado | Дата: Воскресенье, 30.03.2025, 07:50 | Сообщение # 824 |
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Группа: Гости
| A tiny rainforest country is growing into a petrostate. A US oil company could reap the biggest rewards
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Guyana’s destiny changed in 2015. US fossil fuel giant Exxon discovered nearly 11 billion barrels of oil in the deep water off the coast of this tiny, rainforested country.
It was one of the most spectacular oil discoveries of recent decades. By 2019, Exxon and its partners, US oil company Hess and China-headquartered CNOOC, had started producing the fossil fuel.? They now pump around 650,000 barrels of oil a day, with plans to more than double this to 1.3 million by 2027.
Guyana now has the world’s highest expected oil production growth through 2035.
This country — sandwiched between Brazil, Venezuela and Suriname — has been hailed as a climate champion for the lush, well-preserved forests that carpet nearly 90% of its land. It is on the path to becoming a petrostate at the same time as the impacts of the fossil fuel-driven climate crisis escalate.
While the government says environmental protection and an oil industry can go hand-in-hand, and low-income countries must be allowed to exploit their own resources, critics say it’s a dangerous path in a warming world, and the benefits may ultimately skew toward Exxon — not Guyana.
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| Billymoike | Дата: Воскресенье, 30.03.2025, 07:50 | Сообщение # 825 |
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Группа: Гости
| Mist and microlightning
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To recreate a scenario that may have produced Earth’s first organic molecules, researchers built upon experiments from 1953 when American chemists Stanley Miller and Harold Urey concocted a gas mixture mimicking the atmosphere of ancient Earth. Miller and Urey combined ammonia (NH3), methane (CH4), hydrogen (H2) and water, enclosed their “atmosphere” inside a glass sphere and jolted it with electricity, producing simple amino acids containing carbon and nitrogen. The Miller-Urey experiment, as it is now known, supported the scientific theory of abiogenesis: that life could emerge from nonliving molecules.
For the new study, scientists revisited the 1953 experiments but directed their attention toward electrical activity on a smaller scale, said senior study author Dr. Richard Zare, the Marguerite Blake Wilbur Professor of Natural Science and professor of chemistry at Stanford University in California. Zare and his colleagues looked at electricity exchange between charged water droplets measuring between 1 micron and 20 microns in diameter. (The width of a human hair is 100 microns.)
“The big droplets are positively charged. The little droplets are negatively charged,” Zare told CNN. “When droplets that have opposite charges are close together, electrons can jump from the negatively charged droplet to the positively charged droplet.”
The researchers mixed ammonia, carbon dioxide, methane and nitrogen in a glass bulb, then sprayed the gases with water mist, using a high-speed camera to capture faint flashes of microlightning in the vapor. When they examined the bulb’s contents, they found organic molecules with carbon-nitrogen bonds. These included the amino acid glycine and uracil, a nucleotide base in RNA.
“We discovered no new chemistry; we have actually reproduced all the chemistry that Miller and Urey did in 1953,” Zare said. Nor did the team discover new physics, he added — the experiments were based on known principles of electrostatics.
“What we have done, for the first time, is we have seen that little droplets, when they’re formed from water, actually emit light and get this spark,” Zare said. “That’s new. And that spark causes all types of chemical transformations.”
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