An anonymous reader quotes a report from Phys.Org: Wormholes play a key role in many science fiction films -- often as a shortcut between two distant points in space. In physics, however, these tunnels in spacetime have remained purely hypothetical. An international team led by Dr. Jose Luis Blazquez-Salcedo of the University of Oldenburg has now presented a new theoretical model in the science journal Physical Review Letters that makes microscopic wormholes seem less far-fetched than in previous theories. [...] The researchers chose a comparatively simple "semiclassical" approach. They combined elements of relativity theory with elements of quantum theory and classic electrodynamics theory. In their model they consider certain elementary particles such as electrons and their electric charge as the matter that is to pass through the wormhole. As a mathematical description, they chose the Dirac equation, a formula that describes the probability density function of a particle according to quantum theory and relativity as a so-called Dirac field.

As the physicists report in their study, it is the inclusion of the Dirac field into their model that permits the existence of a wormhole traversable by matter, provided that the ratio between the electric charge and the mass of the wormhole exceeds a certain limit. In addition to matter, signals -- for example electromagnetic waves -- could also traverse the tiny tunnels in spacetime. The microscopic wormholes postulated by the team would probably not be suitable for interstellar travel. Moreover, the model would have to be further refined to find out whether such unusual structures could actually exist. "We think that wormholes can also exist in a complete model," says Blazquez-Salcedo.

Russian intelligence agencies have mounted a campaign to undermine confidence in Pfizer's and other Western vaccines, using online publications that in recent months have questioned the vaccines' development and safety, U.S. officials said. From a report: An official with the State Department's Global Engagement Center, which monitors foreign disinformation efforts, identified four publications that he said have served as fronts for Russian intelligence. The websites played up the vaccines' risk of side effects, questioned their efficacy, and said the U.S. had rushed the Pfizer vaccine through the approval process, among other false or misleading claims. Though the outlets' readership is small, U.S. officials say they inject false narratives that can be amplified by other Russian and international media.

"We can say these outlets are directly linked to Russian intelligence services," the Global Engagement Center official said of the sites behind the disinformation campaign. "They're all foreign-owned, based outside of the United States. They vary a lot in their reach, their tone, their audience, but they're all part of the Russian propaganda and disinformation ecosystem." In addition, Russian state media and Russian government Twitter accounts have made overt efforts to raise concerns about the cost and safety of the Pfizer vaccine in what experts outside the U.S. government say is an effort to promote the sale of Russia's rival Sputnik V vaccine.

"The emphasis on denigrating Pfizer is likely due to its status as the first vaccine besides Sputnik V to see mass use, resulting in a greater potential threat to Sputnik's market dominance," says a forthcoming report by the Alliance for Securing Democracy, a nongovernmental organization that focuses on the danger that authoritarian governments pose to democracies and that is part of the German Marshall Fund, a U.S. think tank. The foreign efforts to sow doubts about the vaccine exploit deep-seated anxieties about the efficacy and side effects of vaccines that were already prevalent in some communities in the U.S. and internationally. Concern about side effects is a major reason for vaccine hesitancy, according to U.S. Census Bureau data made public last month.

In late November, an urgent email popped up in the inbox of Hindustan Syringes & Medical Devices, one of the world's largest syringe makers. It was from UNICEF, the United Nations agency for children, and it was desperately seeking syringes. Not just any would do. These syringes must be smaller than usual. They had to break if used a second time, to prevent spreading disease through accidental recycling. Most important, UNICEF needed them in vast quantities. Now. From a report: "I thought, 'No issues,'" said Rajiv Nath, the company's managing director, who has sunk millions of dollars into preparing his syringe factories for the vaccination onslaught. "We could deliver it possibly faster than anybody else." As countries jostle to secure enough vaccine doses to put an end to the Covid-19 outbreak, a second scramble is unfolding for syringes. Vaccines aren't all that useful if health care professionals lack a way to inject them into people.

Officials in the United States and the European Union have said they don't have enough vaccine syringes. In January, Brazil restricted exports of syringes and needles when its vaccination effort fell short. Further complicating the rush, the syringes have to be the right type. Japan revealed last month that it might have to discard millions of doses of the Pfizer-BioNTech vaccine if it couldn't secure enough special syringes that could draw out a sixth dose from its vials. In January, the Food and Drug Administration advised health care providers in the United States that they could extract more doses from the Pfizer vials after hospitals there discovered that some contained enough for a sixth -- or even a seventh -- person. "A lot of countries were caught flat-footed," said Ingrid Katz, the associate director of the Harvard Global Health Institute. "It seems like a fundamental irony that countries around the world have not been fully prepared to get these types of syringes." The world needs between eight billion and 10 billion syringes for Covid-19 vaccinations alone, experts say. In previous years, only 5 percent to 10 percent of the estimated 16 billion syringes used worldwide were meant for vaccination and immunization, said Prashant Yadav, a senior fellow at the Center for Global Development, a think tank in Washington, and an expert on health care supply chains.

Astronomers have found the farthest known source of radio emissions in the universe: a quasar 13 billion light-years from Earth spewing jets of particles at nearly the speed of light. Live Science reports: Quasars are some of the oldest, most distant, most massive and brightest objects in the universe. They make up the cores of galaxies where a rapidly spinning supermassive black hole gorges on all the matter that's unable to escape its gravitational grasp. While the black hole is devouring this matter, it's also blasting out an enormous amount of radiation that collectively can be more than a trillion times more luminous than the brightest stars, making quasars the brightest objects in the observable universe.

This quasar in particular, named P172+18, is a relic from around 780 million years after the Big Bang and reveals clues about one of the earliest ages of the universe -- the epoch of reionization. At the start of this period, the universe was darkly veiled by a mostly uniform cloud of hydrogen gas. Scientists refer to this time as the universe's dark ages, because most light emitted was quickly absorbed by the neutrally charged gas. Eventually, gravity collapsed the primordial gas into the first stars and quasars, which began to heat and ionize the surrounding gases, allowing light to pass through. [...] Further observations from telescopes [...] showed that P172+18 is nearly 300 million times more massive than the sun and is among the fastest-growing quasars ever discovered. The problem is, scientists don't know how a black hole became so massive this early on in the universe. The radio jets could be an explanation. The researchers' findings will be published in The Astrophysical Journal.

France concealed the true impact of its nuclear tests in the Pacific from the 1960s to the 1990s, a study has said. From a report: Researchers used declassified French military documents, calculations and testimonies to reconstruct the impact of a number of the tests. They estimated that around 110,000 people in French Polynesia were affected by the radioactive fallout. The number represented "almost the entire" population at the time, the researchers found. French Polynesia, a French territory made up of hundreds of islands and atolls including Tahiti, was the site of dozens of nuclear tests over 30 years. Over the course of two years, researchers analysed around 2,000 documents released by the French military and recreated the impact of "the most contaminating" of France's nuclear tests carried out between 1966 and 1974.

The study was carried out in collaboration between French news website Disclose, researchers from Princeton University and British firm Interprt. The 41st test took place over Mururoa Atoll on 17 July 1974, when the atomic cloud took a different trajectory than planned. Some 42 hours after the test codenamed Centaur, "the inhabitants of Tahiti and the surrounding islands of the Windward group were subjected to significant amounts of ionising radiation", the report says. The area was home to 110,000 people and Tahiti's main city, Papeete, alone had a population of 80,000.

Russia and China have signed an agreement to build and work on an "International Scientific Lunar Station" orbiting the Moon, the countries' space agencies announced Tuesday. From a report: The space powers had been in talks for months as Russia mulled over whether it would participate in NASA's Gateway program, a rival lunar space station to be built by a coalition of other countries in the next decade. The International Scientific Lunar Station that Russia and China will work on is "a complex of experimental research facilities created on the surface and/or in the orbit of the Moon," Roscosmos said in a statement. It will be designed to support a variety of research experiments "with the possibility of long-term unmanned operation with the prospect of a human presence on the moon," the statement said.

Like NASA, China has been courting international support for its own plans to put infrastructure on the Moon. It's also sent several robotic Chang'e missions to the Moon, including the first landing on the Moon's far side and a swift sample retrieval mission in December. The lunar space station agreement, signed virtually between China's space chief Zhang Kejian and Russia's space chief Dmitry Rogozin, marks the latest development in Beijing's efforts to explore the Moon alongside rivals like NASA, which is barred from working with China under a law passed by Congress in 2011.

According to a new study published today in JNeurosci, it may now be possible to forecast changes in stock prices by examining brain activity in regions associated with anxiety and risk-avoidance. "Scientists could accurately forecast market price changes based on the average brain activity among a group but failed when using only prior stock trends or people's investment choices," reports SciTechDaily. From the report: Participants examined real stock price trends from 2015 as they decided if they wanted to buy or sell the displayed stocks. During the task, the researchers used fMRI to measure activity in the nucleus accumbens and anterior insula, areas involved in seeking reward and avoiding risk, respectively. Using the group's average brain activity in these regions, the researchers could forecast how a stock would behave. Increased nucleus accumbens activity forecast when a stock's price would increase the next day, while increased anterior insula activity forecast when it would flip or change direction. Prior stock market trends and the participants' own investing choices could not forecast stock price dynamics.

A Microsoft-led team of physicists has retracted a high-profile 2018 paper that the company touted as a key breakthrough in the creation of a practical quantum computer, a device that promises vast new computing power by tapping quantum mechanics. From a report: The retracted paper came from a lab headed by Microsoft physicist Leo Kouwenhoven at Delft University of Technology in the Netherlands. It claimed to have found evidence of Majorana particles, long-theorized but never conclusively detected. The elusive entities are at the heart of Microsoft's approach to quantum computing hardware, which lags behind that of others such as IBM and Google. WIRED reported last month that other physicists had questioned the discovery after receiving fuller data from the Delft team. Sergey Frolov, from the University of Pittsburgh, and Vincent Mourik, at University of New South Wales, in Australia, said it appeared that data that cast doubt on the Majorana claim was withheld.

Monday, the original authors published a retraction note in the prestigious journal Nature, which published the earlier paper, admitting the whistleblowers were right. Data was "unnecessarily corrected," it says. The note also says that repeating the experiment revealed a miscalibration error that skewed all the original data, making the Majorana sighting a mirage. "We apologize to the community for insufficient scientific rigor in our original manuscript," the researchers wrote. Frolov and Mourik's concerns also triggered an investigation at Delft, which Monday released a report from four physicists not involved in the project. It concludes that the researchers did not intend to mislead but were "caught up in the excitement of the moment," and selected data that fit their own hopes for a major discovery. The report sums up that breach of the norms of the scientific method with a quote from physics Nobel laureate Richard Feynman: "The first principle is that you must not fool yourself -- and you are the easiest person to fool." The Delft lab released raw data from its 2018 experiment Monday. Frolov and Mourik say that it should also release full data from its Majorana hunting project going back until 2010 for others to analyze.

schwit1 writes: Americans who have received the full COVID-19 vaccine can gather with vaccinated grandparents or friends without wearing masks or keeping their distance, according to new CDC guidance announced Monday, and those grandparents can visit with and hug family members that aren't vaccinated as long as they don't have underlying medical conditions that put them at high risk for COVID-19. The new guidance also says that vaccinated individuals don't need to quarantine or get tested if they come in contact with someone positive for COVID-19 and don't have any symptoms.

Long-time Slashdot reader Nkwe shares an article from NPR: His job was to sign and submit an official form. Sign the form, he believed, and he'd risk the lives of the seven astronauts set to board the spacecraft the next morning. Refuse to sign, and he'd risk his job, his career, and the good life he'd built for his wife and four children.

"And I made the smartest decision I ever made in my lifetime," McDonald told me. "I refused to sign it. I just thought we were taking risks we shouldn't be taking...."

Now, 35 years after Challenger, McDonald's family reports that he died Saturday in Ogden, Utah, after suffering a fall and brain damage. He was 83 years old.

"There are two ways in which [McDonald's] actions were heroic," recalls Mark Maier, who directs a leadership program at Chapman University and produced a documentary about the Challenger launch decision. One was on the night before the launch, refusing to sign off on the launch authorization and continuing to argue against it," Maier says. "And then afterwards in the aftermath, exposing the cover-up that NASA was engaged in...."

He later co-authored one of the most definitive accounts of the Challenger disaster: Truth, Lies, and O-Rings — Inside the Space Shuttle Challenger Disaster. In retirement, McDonald became a fierce advocate of ethical decision-making and spoke to hundreds of engineering students, engineers and managers.

schwit1 shares an article from Entrepreneur: If anyone has the ability to surprise the world with his ambitious projects, it is Elon Musk . The billionaire announced that he is building a new city in Texas to be called Starbase, around the rocket launch site of his company SpaceX...

Later, he alluded to his project to colonize the red planet, hinting that Starbase would be just the beginning to go further. "From there to Mars. And hence the Stars," detailed the CEO of Tesla.

The tycoon, who is currently the second richest person in the world , said that his city will occupy an area "much larger" than Boca Chica , a place that houses a launch site for SpaceX and where the company is building its Starship rocket... Eddie Treviño, judge for Cameron County, Texas, confirmed that SpaceX informed the authorities of Elon Musk's intention: to incorporate Boca Chica into the city of Starbase . The official noted that the mogul and his company must comply with all state statutes of incorporation and clarified that the county will process any petition in accordance with the law.
Musk also tweeted that the leader of his new city "shall be The Doge," linking to a Wikipedia definition for the Venetian word doge (meaning either "military commander" or "spiritual leader".)

Musk made his remark in response to a Twitter user named Wootiez, who had asked him whether his new city would be dog friendly.

Slashdot reader wooloohoo shares a new article from Cornell's Alliance for Science, a group who gives its mission as correcting misinformation and countering conspiracy theories slowing progress on issues including synthetic biology and agricultural innovations: There are two types of chickens: the broilers that we eat and the layers that produce the eggs. The layers don't have enough meat to make them useful for human consumption and since only hens can lay eggs, that leaves the male layers useless. As a result, billions of newly hatched male layer chicks are killed each year.

Now the Israeli ag-tech startup eggXYt has found a way to humanely address this dilemma through the use of CRISPR — the gene editing technique that allows scientists to make targeted, specific genetic tweaks...

By using CRISPR, eggXYt's scientists can edit the genes of chickens to make them lay sex-detectable eggs... The global egg industry saves the costs and the ethical conundrum of killing half of its product and billions of additional eggs are added to the global market to help meet growing demand.

fahrbot-bot shares a report from Live Science: Astrophysicists have an idea that could help to solve two mysteries: the reason for the bizarre abundance of super-high-energy radiation shooting from the center of our galaxy and the identity of invisible stuff called dark matter that has perplexed the world since its discovery some 50 years ago. And the idea has a super-cool name: gravity portals. The idea goes, when two dark matter particles (whatever they are) get sucked into one of these portals, they obliterate each other and spit out shockingly strong gamma rays. This line of thinking can potentially explain why the galactic center -- where dense clusters of dark matter are thought to lurk -- is full of gamma rays; and it could shed light on how the dark matter behaves and might occasionally interact with the normal matter of our universe. The study has been published to arXiv, but has yet to be peer-reviewed.

Thelasko shares a new study published by the Centers for Disease Control and Prevention. NPR reports on the key findings: As several states face criticism for lifting coronavirus-related public health restrictions, a study published Friday confirms that state-imposed mask mandates and on-premises dining restrictions help slow the spread of COVID-19. The study, published in the Centers for Disease Control and Prevention's Morbidity and Mortality Weekly Report, looked at the impact of state-issued mask mandates and on-premises dining on county-level COVID-19 cases and deaths between March 1 and Dec. 31.

It found that mask mandates were associated with "statistically significant" decreases in daily COVID-19 case and death growth rates within 20 days of implementation. In contrast, allowing on-premises dining was associated with an increase in daily cases 41 to 100 days after reopening, and an increase in daily death growth rates after 61 to 100 days. "Policies that require universal mask use and restrict any on-premises restaurant dining are important components of a comprehensive strategy to reduce exposure to and transmission of SARS-CoV-2," the study authors wrote. "Such efforts are increasingly important given the emergence of highly transmissible SARS-CoV-2 variants in the United States." The study says its analysis did not differentiate between indoor and outdoor dining.

France's ranks of amateur astronomers have been urged to help find an apricot-size meteorite that fell to Earth last weekend in the south-west of the country. From a report: The rock, estimated to weigh 150 grams (just over five ounces), was captured plunging through the atmosphere by cameras at an astronomy education facility in Mauraux, and landed at exactly 10.43pm on Saturday near Aiguillon, about 100km (62 miles) from Bordeaux. The site is part of the Vigie-Ciel (Sky Watch) project of around 100 cameras in the Fireball Recovery and InterPlanetary Observation Network (FRIPON), which aims to detect and collect the 10 or so meteorites that fall on France each year.

"Meteorites are relics of the solar system's creation, with the benefit of never being exposed to the elements," said Mickael Wilmart of the A Ciel Ouvert (Open Sky) astronomy education association that operates the Mauraux observatory. "A fresh meteorite like this, which fell just a few days ago, hasn't been altered by the Earth's environment and therefore contains very precious information for scientists," he said.

Images of what appears to be a hovering ship have been captured as the result of a rare optical illusion off the coast of England. From a report: David Morris took a photo of the ship near Falmouth, Cornwall. BBC meteorologist David Braine said the "superior mirage" occurred because of "special atmospheric conditions that bend light". He said the illusion is common in the Arctic, but can appear "very rarely" in the UK during winter. Mr Morris said he was "stunned" after capturing the picture while looking out to sea from the hamlet of Gillan. Mr Braine said: "Superior mirages occur because of the weather condition known as a temperature inversion, where cold air lies close to the sea with warmer air above it. "Since cold air is denser than warm air, it bends light towards the eyes of someone standing on the ground or on the coast, changing how a distant object appears.

A security flaw in a website run by the government of West Bengal in India exposed the lab results of at least hundreds of thousands of residents, though likely millions, who took a COVID-19 test. TechCrunch reports: The website is part of the West Bengal government's mass coronavirus testing program. Once a COVID-19 test result is ready, the government sends a text message to the patient with a link to its website containing their test results. But security researcher Sourajeet Majumder found that the link containing the patient's unique test identification number was scrambled with base64 encoding, which can be easily converted using online tools. Because the identification numbers were incrementally sequenced, the website bug meant that anyone could change that number in their browser's address bar and view other patients' test results.

The test results contain the patient's name, sex, age, postal address and if the patient's lab test result came back positive, negative or inconclusive for COVID-19. Majumder told TechCrunch that he was concerned a malicious attacker could scrape the site and sell the data. "This is a privacy violation if somebody else gets access to my private information," he said. Majumder reported the vulnerability to India's CERT, the country's dedicated cybersecurity response unit, which acknowledged the issue in an email. He also contacted the West Bengal government's website manager, who did not respond. TechCrunch independently confirmed the vulnerability and also reached out to the West Bengal government, which pulled the website offline, but did not return our requests for comment.

One billion years from now, Earth's atmosphere will contain very little oxygen, making it uninhabitable for complex aerobic life. From a report: Today, oxygen makes up around 21 per cent of Earth's atmosphere. Its oxygen-rich nature is ideal for large and complex organisms, like humans, that require the gas to survive. But early in Earth's history, oxygen levels were much lower -- and they are likely to be low again in the distant future. Kazumi Ozaki at Toho University in Funabashi, Japan, and Chris Reinhard at the Georgia Institute of Technology in Atlanta modelled Earth's climatic, biological and geological systems to predict how atmospheric conditions on Earth will change. The researchers say that Earth's atmosphere will maintain high levels of oxygen for the next billion years before dramatically returning to low levels reminiscent of those that existed prior to what is known as the Great Oxidation Event of about 2.4 billion years ago. "We find that the Earth's oxygenated atmosphere will not be a permanent feature," says Ozaki. One central reason for the shift is that, as our sun ages, it will become hotter and release more energy.

The researchers calculate that this will lead to a decrease in the amount of carbon dioxide in the atmosphere as CO2 absorbs heat and then breaks down. Ozaki and Reinhard estimate that in a billion years, carbon dioxide levels will become so low that photosynthesising organisms -- including plants -- will be unable to survive and produce oxygen. The mass extinction of these photosynthetic organisms will be the primary cause of the huge reduction in oxygen. "The drop in oxygen is very, very extreme -- we're talking around a million times less oxygen than there is today," says Reinhard.

wooloohoo shares a report: Livestock researchers in Africa are looking to genome editing and other new technologies to identify genes that could help them tame the spread of a parasite that spreads sleeping sickness in animals and humans. In addition to work aimed at eradicating African trypanosomiasis, scientists at the International Livestock Research Institute (ILRI) in Nairobi are using gene editing to introduce such desirable traits as heat tolerance and disease resistance into cattle and chickens, said Prof. Steve Kemp, program leader in livestock genetics at ILRI. However, he said the effort is still at the preliminary research stage. African animal trypanosomiasis is a parasitic disease that causes serious livestock losses due to anemia and lower reproduction rates, according to the Center for Food Security and Public Health. Losses in cattle are especially prominent, though other animals, including dogs, can also be affected. Untreated cases can be fatal, and the mortality rate is high in some outbreaks.

"Eradicating African animal trypanosomiasis is extremely important as we estimate that Africa loses US$1 billion annually due to human and livestock diseases," Kemp said. The people keeping livestock have experienced huge losses due to animal diseases, said Abdikadir Mohamed, chief executive officer of the Kenya Livestock Marketing Council (KLMC). "This leads to people getting poorer. Some sickly animals are rejected during market days, yet they come from far to sell the livestock. There is also a security threat as herders go back with their livestock. We need to stop these persistent diseases by available technologies."

The first space hurricane ever was spotted in August 2014, consisting of "an eddy of plasma, a type of superhot, charged gas found throughout the solar system," reports Business Insider. "And instead of rain, this storm brought showers of electrons." From the report: In August 2014, satellites observed a swirling mass with a quiet center more than 125 miles above the North Pole. The space hurricane was more than 620 miles wide and high in the sky -- it formed in the ionosphere, between 50 and 600 miles up. Lockwood and his coauthors used the satellite data to create a 3D model of the storm. The space hurricane lasted eight hours, swirling counterclockwise. The researchers said it had several spiral arms snaking out from its center, a bit like a spiral galaxy. By plugging the satellite data into a computer model, Lockwood and his collaborators were able to reproduce the storm and figure out what caused it. They found that charged particles emitted by the sun's upper atmosphere, the corona, were to blame.

This steady stream of solar particles and coronal plasma is known as solar wind. It moves at about 1 million miles an hour. As solar wind reaches Earth, it encounters the planet's magnetic field. Earth has such a field because of the swirling liquid iron and nickel in its outer core, which gives rise to electric currents. The magnetosphere protects the planet from deadly radiation from the sun but also retains a tiny layer of plasma from that solar wind. Typically, solar winds glance off this protective sheath. But sometimes the incoming charged particles and plasma interact with either the trapped plasma or the electrical currents generating the field. Such interactions create disturbances in the magnetosphere. The 2014 space hurricane was one such disturbance.

Usually, magnetic fields don't mix. But if they do come close, portions of the fields can get realigned and even merge, forming a new pattern of magnetic energy. That's what likely happened on the day of the space storm: An influx of solar wind energy formed a new pattern above Earth's magnetic north pole. The storm acted as a channel from space into Earth's atmosphere, funneling some electrons down past the planet's armor. This particle rain could have wreaked havoc on our high-frequency radio communications, radar-detection systems, or satellite technology, the study's authors said. That's because charged solar particles that seep through Earth's magnetic field can cause malfunctions in computers and circuitry on satellites and the International Space Station. Luckily, in this case, no issues were observed.