Objects, including spacecraft, could pierce through the universe using several black holes as a ‘shortcut’, a new study suggests.
The new theory posited by French physicist Pascal Koiran marks a break from earlier research in the field of black hole studies. Previously, it was thought that a so-called ‘wormhole’ composed of two black holes would be prone to instantly collapse, thus making it impossible for an object to successfully travel all the way from one side and out the other. However, by employing different metrics, the French scientist’s new model has arrived at a very different conclusion: “We show that the particle reaches the wormhole throat for a finite value t′1 of the time marker t′.” In essence, that means an object, for instance, a spacecraft, could pass through this wormhole portal intact and reach some far-away region of the universe, taking far less time than would be needed if traveling conventionally.
The study in its entirety will see the light of day in the upcoming issue of the Journal of Modern Physics D, though an abstract has been available since early October.
Yet, there are too many ifs as to whether this purely theoretical model has any bearing on the way the universe actually works. For starters, to create such a time-and-space tunnel you would need a regular black hole and a so-called white hole, which is essentially a black hole in reverse. While black holes never let anything out, their ‘twins’ never let anything in. So, according to Albert Einstein’s theory of general relativity and Nathan Rosen’s additions to it, if you were to connect the two, they would make up a bridge across time and space. However, if the laws postulated by another branch of physics, thermodynamics, are anything to go by, such a construct would be highly unstable. Perhaps more importantly, the very existence of white holes has yet to be proven beyond a reasonable doubt. At present, they remain a pure theorization, thus putting any talk of space-and-time portals on rather shaky ground.
Objects, including spacecraft, could pierce through the universe using several black holes as a ‘shortcut’, a new study suggests.
The new theory posited by French physicist Pascal Koiran marks a break from earlier research in the field of black hole studies. Previously, it was thought that a so-called ‘wormhole’ composed of two black holes would be prone to instantly collapse, thus making it impossible for an object to successfully travel all the way from one side and out the other. However, by employing different metrics, the French scientist’s new model has arrived at a very different conclusion: “We show that the particle reaches the wormhole throat for a finite value t′1 of the time marker t′.” In essence, that means an object, for instance, a spacecraft, could pass through this wormhole portal intact and reach some far-away region of the universe, taking far less time than would be needed if traveling conventionally.
The study in its entirety will see the light of day in the upcoming issue of the Journal of Modern Physics D, though an abstract has been available since early October.
Yet, there are too many ifs as to whether this purely theoretical model has any bearing on the way the universe actually works. For starters, to create such a time-and-space tunnel you would need a regular black hole and a so-called white hole, which is essentially a black hole in reverse. While black holes never let anything out, their ‘twins’ never let anything in. So, according to Albert Einstein’s theory of general relativity and Nathan Rosen’s additions to it, if you were to connect the two, they would make up a bridge across time and space. However, if the laws postulated by another branch of physics, thermodynamics, are anything to go by, such a construct would be highly unstable. Perhaps more importantly, the very existence of white holes has yet to be proven beyond a reasonable doubt. At present, they remain a pure theorization, thus putting any talk of space-and-time portals on rather shaky ground.
France shouldn’t remain silent on Julian Assange, leftist leader Jean-Luc Melenchon has said, after the imprisoned WikiLeaks co-founder’s father suggested that Paris could offer asylum to his son.
The life of Assange – who is being held in solitary confinement at London’s Belmarsh maximum security prison while a British court considers an extradition request by the US – is under threat, Melenchon wrote on Twitter on Tuesday.
“For years, we’ve been calling for France to accept him,” the head of the leftist La France Insoumise (France Unbowed) party said, insisting that “France shouldn’t remain silent.”
The statement by Melenchon, who won 19.6% of the ballot in the first round of the French presidential election in 2017, follows a visit by Assange’s father, John Shipton, to the Whistleblower Meeting in Paris on Monday.
During the event, Shipton told Sputnik news agency that it would be “an honorable thing” for the French government to grant his son asylum.
“I feel that France hasn’t attacked Julian over the last 12 years and consequently France is free to act in return for the information that WikiLeaks and Julian brought to France,” he said, referring to the website’s revelations of the US intelligence agencies spying on French presidents and hacking into local banks.
🔴 John #Shipton : «La France n’a pas attaqué #Julian pendant les dernières années difficiles, donc la France est libre d’agir en échange des informations que #WikiLeaks et Julian ont apportées à la France. Ce serait honorable pour la #France d’offrir [l’asile] à Julian #Assange» pic.twitter.com/ceZ7qTARua
Several dozen French lawmakers have also recently called upon Paris to take Assange in, with the Australian-born publisher’s legal team saying last year that their client was hoping to find asylum on French soil.
Assange could face up to 175 years behind bars if he’s extradited to the US, where he’s wanted on espionage charges over the release by WikiLeaks of classified documents on Iraq, Afghanistan, Guantanamo Bay, and others.
He was placed in Belmarsh in April 2019 over breach of bail, after being holed up in the Ecuadorian Embassy in London for seven years.
The publisher had been fleeing an arrest warrant issued over sexual assault allegations which he has always denied, and which failed to result in any actual charges due to lack of evidence.
Assange’s supporters insist that he has actually been persecuted over his legitimate journalistic activities and revealing the truth to the public.
The UK High Court is expected to rule on the appeal by the US against a lower court decision to bar the WikiLeaks co-founder’s extradition to America due to the 50-year-old’s poor health condition and risk of suicide.
Assange’s team will then be able to challenge the ruling in the Supreme Court if it’s not favorable.
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The International Criminal Court has halted an investigation into alleged rights abuses carried out by Philippines authorities as part of a harsh crackdown on the drug trade, saying it is reviewing a deferral request from Manila.
The ICC’s chief prosecutor Karim Khan said the probe was suspended after the Philippines government filed a request to defer the case earlier this month, according to court documents cited by Reuters on Friday.
“The prosecution has temporarily suspended its investigative activities while it assesses the scope and effect of the deferral request,” he wrote, adding that the court is seeking more information from the government in Manila.
Based in The Hague, the ICC allows states to ask for postponements if they conduct their own investigations into the charges in question. President Rodrigo Duterte’s administration filed its deferral request on November 10, while the country’s Justice Ministry announced its own investigation into the alleged abuses late last month.
The court initially opened the probe in September over allegations that Philippines police had carried out thousands of extrajudicial executions and used other brutal tactics against suspected drug dealers, and that Duterte gave implicit backing to those actions. Activists have accused authorities of killing innocent people, including children, though the police insist they only use violence in self-defense.
While Duterte has declined to cooperate with the ICC probe, saying it has no authority on the island nation, and even pulled the Philippines out of the international body in 2019, the court has jurisdiction to investigate alleged violations committed by the country while it was still a member.
The president’s chief legal counsel, Salvador Panelo, confirmed the deferral request in brief comments to Reuters, saying “There is no inconsistency with the request for suspension of action,” though he did not elaborate.
Since its founding some 20 years ago, the ICC has successfully convicted just five people of war crimes or crimes against humanity – all leaders of armed movements in Africa, including in Mali, Uganda and the Democratic Republic of the Congo.
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France shouldn’t remain silent on Julian Assange, leftist leader Jean-Luc Melenchon has said, after the imprisoned WikiLeaks co-founder’s father suggested that Paris could offer asylum to his son.
The life of Assange – who is being held in solitary confinement at London’s Belmarsh maximum security prison while a British court considers an extradition request by the US – is under threat, Melenchon wrote on Twitter on Tuesday.
“For years, we’ve been calling for France to accept him,” the head of the leftist La France Insoumise (France Unbowed) party said, insisting that “France shouldn’t remain silent.”
The statement by Melenchon, who won 19.6% of the ballot in the first round of the French presidential election in 2017, follows a visit by Assange’s father, John Shipton, to the Whistleblower Meeting in Paris on Monday.
During the event, Shipton told Sputnik news agency that it would be “an honorable thing” for the French government to grant his son asylum.
“I feel that France hasn’t attacked Julian over the last 12 years and consequently France is free to act in return for the information that WikiLeaks and Julian brought to France,” he said, referring to the website’s revelations of the US intelligence agencies spying on French presidents and hacking into local banks.
🔴 John #Shipton : «La France n’a pas attaqué #Julian pendant les dernières années difficiles, donc la France est libre d’agir en échange des informations que #WikiLeaks et Julian ont apportées à la France. Ce serait honorable pour la #France d’offrir [l’asile] à Julian #Assange» pic.twitter.com/ceZ7qTARua
Several dozen French lawmakers have also recently called upon Paris to take Assange in, with the Australian-born publisher’s legal team saying last year that their client was hoping to find asylum on French soil.
Assange could face up to 175 years behind bars if he’s extradited to the US, where he’s wanted on espionage charges over the release by WikiLeaks of classified documents on Iraq, Afghanistan, Guantanamo Bay, and others.
He was placed in Belmarsh in April 2019 over breach of bail, after being holed up in the Ecuadorian Embassy in London for seven years.
The publisher had been fleeing an arrest warrant issued over sexual assault allegations which he has always denied, and which failed to result in any actual charges due to lack of evidence.
Assange’s supporters insist that he has actually been persecuted over his legitimate journalistic activities and revealing the truth to the public.
The UK High Court is expected to rule on the appeal by the US against a lower court decision to bar the WikiLeaks co-founder’s extradition to America due to the 50-year-old’s poor health condition and risk of suicide.
Assange’s team will then be able to challenge the ruling in the Supreme Court if it’s not favorable.
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The planned introduction of chemical castration for serial rapists in Pakistan has been dropped due to objections from experts in Islamic law, who said such punishment would be counter to Sharia.
The controversial clause in a bill amending criminal law in Pakistan was dropped before the National Assembly voted on it on Wednesday, a parliament official said on Friday. If it were passed, it would have been unconstitutional, Parliamentary Secretary for Law and Justice Maleeka Bokhari explained. The basic law of the country requires all its laws to be in line with the Sharia and the Koran.
Bokhari said the decision to drop the clause was taken due to objections from the Council of Islamic Ideology, a constitutional body that advises the government of Pakistan on the intricacies of Islamic law.
The bill amends Pakistan’s Penal Code and Criminal Procedure Code to streamline investigations and prosecutions of sexual crimes as part of wider anti-rape reform. Some conservative lawmakers vocally argued against the castration clause as the piece of legislation was moving towards approval. Senator Mushtaq Ahmed from the Islamist Jamaat-i-Islami party argued that rapists should be hanged publicly, while castration was never mentioned in Sharia.
A separate bill also approved by the parliament on Wednesday introduces a system of special regional investigators for rape allegations to be appointed by the prime minister, as well as new protections for victims, and punishments for officials who fail to investigate their complaints properly. Among other things, it makes evidence that a victim is “generally of immoral character” inadmissible in court.
The reform is necessary because currently deterrence of sexual crimes in Pakistan is undermined by “poor investigation, archaic procedures and rules of evidence and delay in the trial,” the bill said.
Reuters has apologized for its poor choice of photo to illustrate a story about a monkey brain study that was deemed offensive and racist in China.
On Thursday, Reuters published a story titled “Monkey-brain study with link to China’s military roils top European university.” The report was about a Chinese professor studying how a monkey’s brain functions at extreme altitude.
The study was done with the help of Beijing’s People’s Liberation Army (PLA) with the aim of developing new drugs to prevent brain damage, Reuters said.
The news agency promoted the story on Twitter with a photo of smiling Chinese soldiers in an oxygen chamber.
The tweet prompted outrage in China, with people calling it racist on social media. Reuters responded on Friday night by deleting the original tweet because the photo of Chinese soldiers was unrelated to the story and “could have been read as offensive.”
PHOTO CORRECTION: We have deleted an earlier tweet that included a picture of Chinese soldiers in an oxygen chamber not described in the original tweet that could have been read as offensive https://t.co/Ahtv9fj8EQ 2/2
“As soon as we became aware of our mistake, the tweet was deleted and corrected, and we apologize for the offense it caused,” Reuters said in a statement to the Global Times, China’s state-run newspaper.
It was not the first time the leading Western news agency had run into trouble in China. In July, the Chinese Embassy in Sri Lanka criticized Reuters for using a photo of Chinese weightlifter and Tokyo 2020 Olympics gold medalist Hou Zhihui that the country’s state media described as “ugly” and “disrespectful to the athlete.”
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Brazil’s former President Luiz Inacio Lula da Silva has said he is willing to stand as a candidate in elections against incumbent leader Jair Bolsonaro, labelling his potential opponent “a poor copy of Trump.”
Speaking in Brussels at a media conference in the European Parliament on Monday, Lula announced that the Workers Party needs to put forward a presidential candidate to take over from right-wing Bolsonaro in 2022 and said he was willing to run in the elections again.
“I’m willing, I’m motivated, I’m in good health,” Lula stated, adding that said he would only make his decision early next year, some months before the election scheduled for October 2022. The popular leftist said his candidacy would depend on whether the party wanted him.
“We need to have someone who stands, we need to win the elections. And at the same time, we have to rebuild Brazil,” he said, speaking on behalf of his Workers Party.
Lula, 76, also took aim at the incumbent president. “He’s a poor copy of Trump. But Bolsonaro doesn’t think, he doesn’t have any ideas,” the former president said, claiming the incumbent leader was hellbent on ensuring the beneficial legacies of Lula’s administration were “torn down.”
A recent poll put him 27 points ahead of Bolsonaro, despite his candidacy not officially being announced.
In 2010, Lula made way for his protégé, Dilma Rousseff. Rousseff was ousted from power in what was described by her supporters as a parliamentary coup. Lula served nearly two years in prison after being convicted on money laundering and corruption, despite a nine-and-a-half-year sentence. He was also barred from running in the 2018 election.
A number of judges have subsequently ruled that the case against Lula was unlawful and the Supreme Court annulled his earlier convictions, meaning he can face off against Bolsonaro in 2022.
Covid-19 variants keep emerging in different parts of the world, causing experts to ask how long the pandemic will last, and how effective the current methods of protection really are.
Since the pandemic started in 2019, people have referred to the disease which has paralyzed the world simply as ‘coronavirus’. Now, in 2021, when we talk about it, we mean not just the original variant, but also its numerous mutations.
In May, the WHO decided to label the key variants with Greek letters. Since then, the Delta variant has been proclaimed the predominant strain across the world, and now we have titles that look like codes to detail the differences between variants. Last month, the UK was put on high alert over a fast-spreading Delta AY.4.2 variant. This week, Norway reported finding one more version of the Delta strain – AY. 63. The country’s experts suggest it’s not more dangerous than the Delta mutation itself. Meanwhile, another Covid variant, discovered in France (B.1.640), brought the researchers an unpleasant surprise: they said they’d never seen mutations like it.
Professor David Dockrell, from the Center for Inflammation Research of the University of Edinburgh, described to RT the reasons for the constant mutation of the coronavirus. “The areas in the virus that are most likely to change are those that come into contact with what we call ‘selective pressures’ – or factors that make them need to change,” he explains. “So, a version of the virus which mutates and changes to give it a selective advantage to escape from the immune system is more likely to prosper and become a dominant strain.”
That’s how it works: The part of the virus many of the immune responses (or antibodies, T-cells etc.) are responding to is called the spike protein (or the S-protein). So, the virus tries to change it in order to survive.
“We know that a variety of different viruses are able to mutate and change when exposed to the selective pressure of the immune system, whether it would be the human immune system or other species in which these viruses have evolved,” Prof. Dockrell says. “And of course, we’ve seen it most clearly with HIV, which is particularly good at changing and evolving. It does something called ‘reverse transcription’ – it copies material in the reversed direction from DNA to RNA.”
Covid is still seemingly running faster than humanity’s efforts to curb it, but Prof. Dockrell has some good news. “The coronavirus – and viruses like it – are not as able to make these changes. They are going to do it to some extent, but they are not going to be as successful as retroviruses and HIV.”
And the other major thing to say: When the viruses make changes, there’s always what we call ‘a fitness cost’. Many of the potential changes that the virus could make will actually not favor its survival. So there are only a certain number, potentially, of changes that the virus can make, before it starts affecting its fitness.
Now, unfortunately, we are still in a phase where Covid19 can continue to evolve and change. It’s not time to panic, though, because across the world various ways to adapt the current anti-Covid strategies are already in place. First of all, people should keep getting vaccines – maybe receiving slightly altered booster doses, Prof. Dockrell suggests, “in a way, that we, after all, have to do with influenza, by providing a seasonal influenza vaccine and changing it every year.”
“And maybe we have to keep changing some of the treatments like these new monoclonal antibodies against the virus, because they also may be limited by the emergence of a mutation of the virus evolving the S-protein,” he adds.
Sounds promising – but won’t it become a never-ending race against constantly emerging mutations?
Hopefully not. According to Prof. Dockrell, there are parts of viruses that scientists call ‘conserved areas’. With time, vaccines and monoclonal antibodies will target these areas, which the virus finds very hard to change. “Clearly, the direction of travel is to develop either vaccine responses that affect more different kinds of virus, or these ‘monoclonal antibodies’ that we could use to prevent or treat infection, that they will target more conserved areas and therefore will be less limited by the ability of these virus to evolve and change,” he concludes.
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Pfizer has agreed to grant a royalty-free license to sell its anti-coronavirus pill in nearly 100 developing countries around the world.
Under the agreement signed with the Medicines Patent Pool (MPP), a UN-backed public health organization, Pfizer will not receive royalties on the sales of its promising antiviral pill in 95 poorer countries, including the states of Sub-Saharan Africa. The measure allows MPP to grant sub-licenses to “qualified” generic medicine manufacturers in each country.
The countries covered by the deal comprise around 53% of the world’s population, Pfizer said. “We believe oral antiviral treatments can play a vital role in reducing the severity of Covid-19 infections, decreasing the strain on our healthcare systems and saving lives,” Pfizer CEO Albert Bourla said.
We must work to ensure that all people – regardless of where they live or their circumstances – have access to these breakthroughs.
During its phase-two/three trial, the drug PF-07321332, trademarked as Paxlovid, reduced the risk of hospitalization or death by 89% in Covid-19 patients who took it within three days of symptom onset. The drug is administered in combination with low-dose ritonavir, a medication used to treat HIV/AIDS.
The UN and the World Health Organization (WHO) have long been urging companies to make vaccines and other forms of Covid-19 treatment accessible and affordable for developing countries.
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