The New York Times reports on what's apparently a new Russia-aligned disinformation campaign to "undermine the effort to immunize people" — and more. (Alternate URL here) Both Russia and China have worked to promote their own vaccines through messaging that undermines American and European vaccination programs, according to the State Department's Global Engagement Center. But in addition to overt messaging promoting their own vaccines, Moscow has also spread conspiracy theories. Last year, the department began warning about how Russia was using fringe websites to promote doubts around vaccinations... The aim of various Russian groups continues to be to exacerbate tensions in Western societies, a key foreign policy goal of Moscow, according to American officials briefed on the disinformation efforts...

In recent weeks, the nature of Russian disinformation has also begun to shift, some officials and outside experts said. Recent postings spreading false information have suggested that the Biden administration is intent on mandating that Americans get vaccines that are failing against the coronavirus. The campaign also comes as President Biden warned President Vladimir V. Putin of Russia last month to rein in ransomware attacks emanating out of Russia and aimed at critical American infrastructure. Though the ransomware attacks are separate from the disinformation campaigns, the warning was the latest effort by United States officials to prod Russia to rein in destructive digital incursions... The Biden administration is actively monitoring Russian misinformation and is trying to counter it by encouraging the public to get vaccinated and promoting the safety and efficacy of Western vaccines, according to an administration official who spoke on condition of anonymity to discuss potentially sensitive information...

Much of the disinformation efforts are posted on websites with little to no moderation... Measuring the impact of the disinformation efforts is difficult, given the deep divisions over vaccinations that already exist in the United States and Europe; exploiting splits among Americans is a typical Russian tactic.

Even on the hard-right discussion forums, some users have fingered the cartoons as being Russian in origin, though the postings have continued.

Friday the Perseverance rover on Mars made its first attempt to collect a rock sample and seal it in a tube, reports NASA. But unfortunately, the data "indicate that no rock was collected during the initial sampling activity..."

"The sampling process is autonomous from beginning to end," said Jessica Samuels, the surface mission manager for Perseverance at NASA's Jet Propulsion Laboratory in Southern California. "One of the steps that occurs after placing a probe into the collection tube is to measure the volume of the sample. The probe did not encounter the expected resistance that would be there if a sample were inside the tube."

The Perseverance mission is assembling a response team to analyze the data. One early step will be to use the WATSON (Wide Angle Topographic Sensor for Operations and eNgineering) imager - located at the end of the robotic arm - to take close-up pictures of the borehole. Once the team has a better understanding of what happened, it will be able to ascertain when to schedule the next sample collection attempt. "The initial thinking is that the empty tube is more likely a result of the rock target not reacting the way we expected during coring, and less likely a hardware issue with the Sampling and Caching System," said Jennifer Trosper, project manager for Perseverance at JPL
"Mars keeps surprising us," adds the rover's Twitter feed. "We're working through this new challenge. More to come."

Space.com points out this wasn't a make-or-break moment for the rover, since it's still carrying 42 more sampling tubes. And the plan has always been to leave the sample tubes on the surface of Mars, where they'll be retrieved later by future Mars missions.

An anonymous reader quotes a report from Live Science: Scientists have created key parts of synthetic brain cells that can hold cellular "memories" for milliseconds. The achievement could one day lead to computers that work like the human brain. In the new study, published in the journal Science on Aug. 6, researchers at the Centre national de la recherche scientifique in Paris, France created a computer model of artificial neurons that could produce the same sort of electrical signals neurons use to transfer information in the brain; by sending ions through thin channels of water to mimic real ion channels, the researchers could produce these electrical spikes. And now, they have even created a physical model incorporating these channels as part of unpublished, ongoing research. At a finer level, the researchers created a system that mimics the process of generating action potentials -- spikes in electrical activity generated by neurons that are the basis of brain activity. To generate an action potential, a neuron starts to let in more positive ions, which are attracted to the negative ions inside of the cell. The electrical potential, or voltage across the cell membrane, causes doorways on the cell called voltage-gated ion channels to open, raising the charge even more before the cell reaches a peak and returns to normal a few milliseconds later. The signal is then transmitted to other cells, enabling information to travel in the brain.

To mimic voltage-gated ion channels, the researchers modeled a thin layer of water between sheets of graphene, which are extremely thin sheets of carbon. The water layers in the simulations were one, two, or three molecules in depth, which the researchers characterized as a quasi-two-dimension slit. [T]he researchers wanted to use this two-dimensional environment because particles tend to react much more strongly in two dimensions than in three, and they exhibit different properties in two dimensions, which the researchers thought might be useful for their experiment. Testing out the model in a computer simulation, the researchers found that when they applied an electric field to the channel, the ions in the water formed worm-like structures. As the team applied a greater electric field in the simulation, these structures would break up slowly enough to leave behind a "memory," or a hint of the elongated configuration.

When the researchers ran a simulation linking two channels and other components to mimic the behavior of a neuron, they found the model could generate spikes in electrical activity like action potentials, and that it "remembered" consistent properties in two different states -- one where ions conducted more electricity and one where they conducted less. In this simulation, the "memory" of the previous state of the ions lasted a few milliseconds, around the same time as it takes real neurons to produce an action potential and return to a resting state. This is quite a long time for ions, which usually operate on timescales of nanoseconds or less. In a real neuron, an action potential equates to a cellular memory in the neuron; our brains use the opening and closing of ion channels to create this kind of memory. The new model is a version of an electronic component called a memristor, or a memory resistor, which has the unique property of retaining information from its history. But existing memristors don't use liquid, as the brain does.

After a successful sub-orbital test flight last month, Virgin Galactic re-opened ticket sales for rides to space starting at $450,000 per seat. CBS News reports: But Michael Colglazier, CEO of Virgin Galactic, said fully commercial flights are not expected until the third quarter of 2022, after two more test flights of the company's VSS Unity spaceplane and extensive upgrades of Virgin's Eve carrier jet to improve durability and turnaround times between flights. While the start of commercial operations will come a few months later than had been hoped, the results of two piloted test flights earlier this year, including Branson's July 11 trip to space, show the company is close to "completing our test flight program and launching commercial passenger service in '22," Colglazier said. "And as we advance towards that goal, we are excited to announce today that we will immediately open ticket sales to our significant list of early hand raisers, prioritizing our spacefarer community who, as promised, will be given first opportunity to reserve their place to space."

He said Virgin has developed a "purposeful range of product offerings in order to satisfy the different ways people were want to share this experience." "For the private astronaut flights, our products will include a single seat, a multi-seat couples, families and friends package and a full-flight buyout," he said. "Prices for this next phase of private astronaut sales will begin at $450,000 per seat. Microgravity research and professional astronaut training flights remain priced at $600,000 on a per seat equivalent basis." More than 600 space enthusiasts made down payments on flights much earlier in the program, back when tickets were thought to be in the neighborhood of $250,000 per seat. The prices announced Thursday presumably will apply to new customers only.

Elon Musk's SpaceX stacked a Starship prototype rocket on top of a Super Heavy rocket booster for the first time on Friday morning, giving a look at the scale of the combined nearly 400-foot-tall vehicle. From a report: Musk, asked by CNBC what he thought of witnessing the milestone at the company's facility in Boca Chica, Texas, responded simply. "Dream come true," Musk replied in a tweet.

SpaceX is developing Starship to launch cargo and people on missions to the moon and Mars. Starship prototypes stand at about 160 feet tall, or around the size of a 16-story building, and are built of stainless steel -- representing the early version of the rocket that Musk unveiled in 2019. The rocket lifts off on top of a Super Heavy booster, which makes up the bottom half of the rocket and stands about 230 feet tall. Together, Starship and Super Heavy are nearly 400 feet tall when stacked for launch.

Moderna says it expects people who received its two-dose Covid-19 vaccine to need a booster shot in the fall [Editor's note: the link may be paywalled; alternative source] to keep strong protection against newer variants of the coronavirus. From a report: The company said its vaccine remains 90% effective against preventing Covid-19 disease for at least six months, but said it sees a decline in antibody levels after six months, especially against newer strains of the coronavirus including the Delta variant. In a Phase 2 study, a third shot of the original formulation showed robust antibody responses against Covid-19 variants of concern, Moderna said. Moderna Chief Executive Stephane Bancel said in an interview Thursday that the company plans to seek regulatory approval for its booster shots in September, after it analyzes data from ongoing trials.

He said the boosters are necessary because immunity will continue to wane over time and some vaccine recipients show a drop in neutralizing antibodies when exposed to some variants, including Delta. "We're playing it safe, not only for Delta but also for what's coming after," he said. "I don't think the virus is done." Moderna, whose vaccine was authorized for emergency use in December, said Thursday it intends to complete in August its submission to the Food and Drug Administration for full approval of its shot. Its larger rival Pfizer completed its submission in July and the FDA aims to approve it by next month. FDA officials say the vaccines are safe but acknowledge full approval could help combat vaccine hesitancy and ease the way for vaccine mandates as cases in the U.S. fueled by the Delta variant surge.

Terry Rudolph, a professor of quantum physics at Imperial College London, suggests that interstellar light could actually be harnessed by space faring aliens to form an encrypted quantum internet. Motherboard reports: This may sound like the stuff of science fiction, but Rudolph says it was actually a natural extension of what he does as co-founder of PsiQuantum, a Silicon Valley-based company on a mission to build a scalable photonic quantum computer. He laid out his idea in a paper recently published on the arXiv preprint server. Rudolph said the idea for the paper on aliens communicating with quantum starlight flowed from his work on quantum computers. Unlike the quantum computers being pursued by the likes of Google or Intel that use superconducting circuits or trapped ions at incredibly cold temperatures to create qubits (the quantum equivalent of a computer bit), photonic computers use light to accomplish the same thing. While Rudolph says this kind of quantum design is unconventional, it does also have advantages over its rival -- including being able to operate at room temperature and easy integration into existing fiber optic infrastructure.

The primary way the aliens would create this kind of quantum internet is through a quantum mechanics principle called entanglement, explains Rudolph. In a nutshell, entanglement is a phenomena in which the quantum states of particles (like photons) are linked together. This is what Einstein referred to as "spooky action at a distance" and means that disturbing one particle will automatically affect its partner, even if they're miles apart. This entanglement would allow aliens -- or even humans -- to send encrypted signals between entangled partners, or nodes. Now, scale that single computer system up to a network potentially spanning the entire cosmos.

Aliens aside, Rudolph says that his paper demonstrates that building a photon-based quantum internet here on Earth might be "much easier than we expected." As for the aliens, even if they were using this kind of technology to transform waves of light into their own personal chat rooms, we'd have no way of knowing, says Rudolph. And even if we could pick out these light patterns in the sky, we still wouldn't be able to listen in. This is due to the incredibly shy nature of quantum particles -- any attempt to observe them by an outside party would alter their state and destroy the information they were carrying.

fahrbot-bot shares a report from Phys.Org: Physicists at the National Institute of Standards and Technology (NIST) have linked together, or "entangled," the mechanical motion and electronic properties of a tiny blue crystal, giving it a quantum edge in measuring electric fields with record sensitivity that may enhance understanding of the universe. The quantum sensor consists of 150 beryllium ions (electrically charged atoms) confined in a magnetic field, so they self-arrange into a flat 2D crystal just 200 millionths of a meter in diameter. Quantum sensors such as this have the potential to detect signals from dark matter -- a mysterious substance that might turn out to be, among other theories, subatomic particles that interact with normal matter through a weak electromagnetic field. The presence of dark matter could cause the crystal to wiggle in telltale ways, revealed by collective changes among the crystal's ions in one of their electronic properties, known as spin.

As described in the Aug. 6 issue of Science, researchers can measure the vibrational excitation of the crystal -- the flat plane moving up and down like the head of a drum -- by monitoring changes in the collective spin. Measuring the spin indicates the extent of the vibrational excitation, referred to as displacement. This sensor can measure external electric fields that have the same vibration frequency as the crystal with more than 10 times the sensitivity of any previously demonstrated atomic sensor. (Technically, the sensor can measure 240 nanovolts per meter in one second.) In the experiments, researchers apply a weak electric field to excite and test the crystal sensor. A dark matter search would look for such a signal.

ytene writes: CNN is claiming an exclusive scoop, with an article reporting that U.S. intelligence agencies have scored a massive trove of Covid-19 genetic data, which, CNN suggests, comes from the Wuhan research lab. More than the complex challenge of absorbing and understanding the "mountain" of raw data, U.S. researchers are going to have to translate the material from native Mandarin before the real work can begin. Whilst there has obviously been a lot of interest in a clear identification of the source, it isn't clear how such a revelation could have a material impact on the efficacy of vaccines or the take-up of the treatment. It might, however, give useful clues to help understand where or how the next deadly outbreak could develop. "It's unclear exactly how or when U.S. intelligence agencies gained access to the information, but the machines involved in creating and processing this kind of genetic data from viruses are typically connected to external cloud-based servers -- leaving open the possibility they were hacked," notes CNN, citing multiple people familiar with the matter.

The report also notes that senior intelligence officials are "genuinely split between the two prevailing theories on the pandemic's origins." The World Health Organization says wildlife farms in southern China are the most likely source of the COVID-19 pandemic, but the theory that the virus accidentally escaped from a lab in Wuhan is still being investigated. According to a CNN report last month, "[S]enior Biden administration officials overseeing the 90-day review now believe the theory that the virus accidentally escaped from a lab in Wuhan is at least as credible as the possibility that it emerged naturally in the wild -- a dramatic shift from a year ago, when Democrats publicly downplayed the so-called lab leak theory."

Dr. Zeynep Tufekci, an associate professor at the University of North Carolina, writing at The New York Times: The C.D.C. faces three major problems. The first is reality: a sustained campaign of misinformation against vaccines and other public health measures, originating mostly with right-wing commentators and politicians, and a new media environment that has upended traditional information flows.

Second, the C.D.C. is still mired in the fog of pandemic, with too little data, collected too slowly, leaving it chasing epidemic waves and trying to make sense of information from other countries. Epidemics spread exponentially, so delayed responses make problems much worse. If the response to a crisis comes after many people are already aware of it brewing, it leaves them confused and fearful if they look to the C.D.C. for guidance, and vulnerable to misinformation if they do not.

Third, the agency is simply not doing a good job at what the pamphlet advises: being first, right and credible, and avoiding mixed messaging, delays and confusion. It's hard not to have sympathy for its predicament. The previous administration undermined the C.D.C., and anti-vaxxers' deliberate misinformation assault has not made the agency's job any easier. The digital public sphere operates fast and furious, and that's difficult for traditional institutions to keep up with or to counter. All this makes it even more important that the C.D.C. properly handle what's under its control.

The response to the Delta variant has been too slow. Data from other countries made it clear months ago that it posed a great threat. Unfortunately, the United States already doesn't systematically collect the kind of data needed on many important indicators. Making things worse, in early May, the C.D.C. stopped tracking breakthrough infections among the vaccinated unless they were hospitalized or worse, even though the reason for continued surveillance is to see and understand changes in an outbreak as early as possible. June passed with little change in the government's response, despite multiple technical papers from Public Health England showing that the Delta variant was much more transmissible and possibly more severe and that it was able to cause more breakthrough infections among the vaccinated. Detailed contact tracing from Singapore also showed that some of the vaccinated were transmitting.

From a paper on PNAS [PDF]: Can entire societies become more or less depressed over time? Here, we look for the historical traces of cognitive distortions, thinking patterns that are strongly associated with internalizing disorders such as depression and anxiety, in millions of books published over the course of the last two centuries in English, Spanish, and German. We find a pronounced "hockey stick" pattern: Over the past two decades the textual analogs of cognitive distortions surged well above historical levels, including those of World War I and II, after declining or stabilizing for most of the 20th century. Our results point to the possibility that recent socioeconomic changes, new technology, and social media are associated with a surge of cognitive distortions.

Individuals with depression are prone to maladaptive patterns of thinking, known as cognitive distortions, whereby they think about themselves, the world, and the future in overly negative and inaccurate ways. These distortions are associated with marked changes in an individual's mood, behavior, and language. We hypothesize that societies can undergo similar changes in their collective psychology that are reflected in historical records of language use. Here, we investigate the prevalence of textual markers of cognitive distortions in over 14 million books for the past 125 y and observe a surge of their prevalence since the 1980s, to levels exceeding those of the Great Depression and both World Wars. This pattern does not seem to be driven by changes in word meaning, publishing and writing standards, or the Google Books sample. Our results suggest a recent societal shift toward language associated with cognitive distortions and internalizing disorders.

An anonymous reader shares a report: With their crane-like necks, spindle legs and knobbly knees, giraffes are among the best loved and most recognizable of animals. Despite their elevated stature, however, giraffes have kept their surprisingly intricate social behavior under wraps. Once perceived as humble creatures that focused solely on feeding their majestic bodies, one book from 1991 described the giraffe as "socially aloof, forming no lasting bonds with its fellows and associating in the most casual way."

But new research from the University of Bristol, published Tuesday in the journal Mammal Review, suggests giraffes have been misunderstood and are in fact a highly complex and social species. The most surprising thing for me is that it has taken until 2021 to recognize that giraffes have a complex social system. We have known for decades about other species of socially complex mammal, such as elephants, primates and cetaceans, but it is baffling to me how such a charismatic and well-known species as the giraffe could have been so understudied until recently," said Zoe Muller, study author and biologist at the University Of Bristol's School of Biological Sciences.

The head of the World Health Organization called Wednesday for a moratorium on administering booster shots of COVID-19 vaccines as a way to help ensure that doses are available in countries where few people have received their first shots. From a report: WHO Director-General Tedros Adhanom Ghebreyesus made the appeal mostly to wealthier countries that have far outpaced the developing world in numbers of vaccinations. He said richer countries have administered about 100 doses of coronavirus vaccines for every 100 people on average, while low-income countries -- hampered by short supplies -- have provided only about 1.5 doses per 100 people.

WHO officials say the science is unproven about whether giving booster shots to people who have already received two vaccine doses is effective in preventing the spread of the coronavirus. The U.N. health agency has repeatedly called for rich countries to do more to help improve access to vaccines in the developing world. It has argued that no one is safe until everyone is safe because the longer and more widely the coronavirus circulates, the greater the chance that new variants could emerge -- and prolong a global crisis in fighting the pandemic.

Researchers around the world have continued breathing new life into a retracted study, which suggested that common antihypertensive medications were harmful in patients with COVID-19. From a report: Published online on May 1, 2020 in the New England Journal of Medicine, the study relied on Surgisphere data to claim an association between renin-angiotensin-aldosterone system (RAAS) inhibitor therapy and worse outcomes in hospitalized COVID-19 patients with cardiovascular disease. The journal retracted the paper due to concerns about fraudulent data on June 4, 2020 in a widely publicized move, but the study has continued to rack up citations -- totaling at least 652 as of May 31, 2021, reported Todd Lee, MD, MPH, of McGill University in Montreal, and colleagues.

Just 17.6% of verified citations acknowledged or noted that the paper was retracted, according to their research letter published in JAMA Internal Medicine. In May of this year alone -- 11 months after the article was retracted -- it was referenced 21 times. "Our findings challenge authors, peer reviewers, journal editors, and academic institutions to do a better job of addressing the broader issues of ongoing citations of retracted scientific studies and protecting the integrity of the medical literature," Lee's group urged. The hypothesis that angiotensin-converting enzyme (ACE) inhibitors and angiotensin-receptor blockers (ARBs) may be harmful in patients with COVID-19 has been floated since the early days of the pandemic, with the reasoning being that since the SARS-CoV-2 virus enters human cells through ACE2 receptors, upregulation of these receptors could put patients at risk.

An Australian mathematician has discovered what may be the oldest known example of applied geometry, on a 3,700-year-old Babylonian clay tablet. Known as Si.427, the tablet bears a field plan measuring the boundaries of some land. From a report: The tablet dates from the Old Babylonian period between 1900 and 1600 BCE and was discovered in the late 19th century in what is now Iraq. It had been housed in the Istanbul Archaeological Museum before Dr Daniel Mansfield from the University of New South Wales tracked it down. Mansfield and Norman Wildberger, an associate professor at UNSW, had previously identified another Babylonian tablet as containing the world's oldest and most accurate trigonometric table. At the time, they speculated the tablet was likely to have had some practical use, possibly in surveying or construction. That tablet, Plimpton 322, described right-angle triangles using Pythagorean triples: three whole numbers in which the sum of the squares of the first two equals the square of the third -- for example, 3^2 + 4^2 = 5^2.

"A research team has proposed a novel link between how fast our planet spun on its axis, which defines the length of a day, and the ancient production of additional oxygen," reports Science Magazine. "Their modeling of Earth's early days, which incorporates evidence from microbial mats coating the bottom of a shallow, sunlit sinkhole in Lake Huron, produced a surprising conclusion: as Earth's spin slowed, the resulting longer days could have triggered more photosynthesis from similar mats, allowing oxygen to build up in ancient seas and diffuse up into the atmosphere." From the report: As a postdoc at the University of Michigan, Ann Arbor, Klatt had studied microbial mats growing on sediments in the Middle Island Sinkhole in Lake Huron. There, the water is shallow enough for the cyanobacteria to get enough sunlight for photosynthesis. Oxygen-depleted water and sulfur gas bubble up from the lake floor, creating anoxic conditions that roughly approximate conditions of early Earth. Scuba divers collected samples of the microbial mats and in the lab, Klatt tracked the amount of oxygen they released under various day lengths simulated with halogen lamps. The longer the exposure to light, the more of the gas the mats released.

Excited, Klatt and Arjun Chennu, a modeler from the Leibniz Center for Tropical Marine Research, set up a numerical model to calculate how much oxygen ancient cyanobacteria could have produced on a global scale. When the microbial mat results and other data were plugged into this computer program, it revealed a key interaction between light exposure and the microbial mats. Typically, microbial mats "breathe" in almost as much oxygen at night as they produce during the day. But as Earth's spin slowed, the additional continuous hours of daylight allowed the simulated mats to build up a surplus, releasing oxygen into the water. As a result, atmospheric oxygen tracked estimated day length over the eons: Both rose in a stepped fashion with a long plateau.

This "elegant" idea helps explain why oxygen didn't build up in the atmosphere as soon as cyanobacteria appeared on the scene 3.5 billion years ago, says Timothy Lyons, a biogeochemist at the University of California, Riverside. Because day length was still so short back then, oxygen in the mats never had a chance to build up enough to diffuse out. "Long daytimes simply allow more oxygen to escape to the overlying waters and eventually the atmosphere," Lyons says. Still, Lyons and others say, many factors likely contributed to the rise in oxygen. For example, Fischer suspects free-floating cyanobacteria, not just those in rock-affixed mats, were big players. Benjamin Mills, an Earth system modeler at the University of Leeds, thinks the release of oxygen-binding minerals by ancient volcanoes likely countered the early buildup of the gas at times and should be factored into oxygen calculations. Nonetheless, changing day length "is something that should be considered in more detail," he says. "I'll try to add it to our Earth system models."

Mayor Bill de Blasio announced today that New York City will become the first major U.S. city to require proof of vaccination to enter all restaurants, fitness centers and indoor entertainment venues. "If you're unvaccinated, unfortunately, you will not be able to participate in many things," de Blasio said. "If you want to participate in our society fully, you've got to get vaccinated." As The Verge reports, "New Yorkers can meet those requirements by carrying their vaccination card or scanning and storing it in one of two authorized mobile apps." From the report: The spread of the highly contagious Delta variant is being cited as a reason to increase restrictions without returning to a full lockdown or other measures. The program is scheduled to launch on August 13th, with enforcement slated to start on September 13th. It doesn't introduce any new documentation; the name is a reference to it serving as a "key" to the city's recovery.

Workers and patrons can confirm their vaccination status (at least one dose administered) in one of three ways: Vaccination card; NYC COVID Safe exposure notification app (iOS, Android); or NYS Excelsior Pass app.

The launch of Boeing's Starliner crew capsule on an unpiloted test flight to the International Space Station was scrubbed Tuesday because of an undisclosed technical issue. Mission managers told the launch team to recycle for another attempt Wednesday at 12:57 p.m. ET, weather permitting. From a report: The launching atop a United Launch Alliance Atlas 5 rocket initially was planned for last Friday, but NASA ordered a delay while Russian space station engineers resolved problems with a newly arrived laboratory module. Over the weekend, the Starliner launch was reset for Tuesday. Forecasters monitoring Florida's typically stormy summer afternoon weather predicted a 60% chance of acceptable conditions then lowered the odds to 50-50. The team pressed ahead with fueling, but around 10:30 a.m., Boeing confirmed a scrub, tweeting, "We're confirming today's #Starliner Orbital Flight Test-2 launch is scrubbed. More details soon."

The Starliner flight marks a major milestone for Boeing and NASA as the agency transitions from hitching rides aboard Russian Soyuz spacecraft to fielding commercial crew ships built by Boeing and SpaceX. SpaceX, under a $2.6 billion NASA contract, launched its Crew Dragon spacecraft on a successful unpiloted test flight in 2019 and a piloted test flight last year. Since then, the California rocket builder has launched two operational flights to the space station carrying two long-duration crews to the outpost.

An anonymous reader quotes a report from Engadget: As part of the latest neurological breakthrough, researchers used a helmet that generates a magnetic field to shrink a deadly tumor by a third. The 53-year-old patient who underwent the treatment ultimately passed away due to an unrelated injury. But, an autopsy of his brain showed that the procedure had removed 31 percent of the tumor mass in a short time. The test marked the first noninvasive therapy for a deadly form of brain cancer known as glioblastoma.

The helmet features three rotating magnets connected to a microprocessor-based electronic controller operated by a rechargeable battery. As part of the therapy, the patient wore the device for five weeks at a clinic and then at home with the help of his wife. The resulting magnetic field therapy created by the helmet was administered for two hours initially and then ramped up to a maximum of six hours per day. During the period, the patient's tumor mass and volume shrunk by nearly a third, with shrinkage appearing to correlate with the treatment dose. The inventors of the device -- which received FDA approval for compassionate use treatment -- claim it could one day help treat brain cancer without radiation or chemotherapy. "Our results... open a new world of non-invasive and nontoxic therapy...with many exciting possibilities for the future," said David S. Baskin, corresponding author and director of the Kenneth R. Peak Center for Brain and Pituitary Tumor Treatment in the Department of Neurosurgery at Houston Methodist Neurological Institute. Details of the procedure have been published in the peer-reviewed journal Frontiers in Oncology.

Events in the genome of Welwitschia have given it the ability to survive in an unforgiving desert for thousands of years. From a report: The longest-lived leaves in the plant kingdom can be found only in the harsh, hyperarid desert that crosses the boundary between southern Angola and northern Namibia. A desert is not, of course, the most hospitable place for living things to grow anything, let alone leafy greens, but the Namib Desert -- the world's oldest with parts receiving less than two inches of precipitation a year -- is where Welwitschia calls home. In Afrikaans, the plant is named "tweeblaarkanniedood," which means "two leaves that cannot die." The naming is apt: Welwitschia grows only two leaves -- and continuously -- in a lifetime that can last millenniums. "Most plants develop a leaf, and that's it," said Andrew Leitch, a plant geneticist at Queen Mary University of London. "This plant can live thousands of years, and it never stops growing. When it does stop growing, it's dead."

Some of the largest plants are believed to be over 3,000 years old, with two leaves steadily growing since the beginning of the Iron Age, when the Phoenician alphabet was invented and David was crowned King of Israel. By some accounts, Welwitschia is not much to look at. Its two fibrous leaves, buffeted by dry desert winds and fed on by thirsty animals, become shredded and curled over time, giving Welwitschia a distinctly octopus-like look. One 19th-century director of Kew Gardens in London remarked, "it is out of the question the most wonderful plant ever brought to this country and one of the ugliest."

But since it was first discovered, Welwitschia has captivated biologists including Charles Darwin and the botanist Friedrich Welwitsch after whom the plant is named: It is said that when Welwitsch first came across the plant in 1859, "he could do nothing but kneel down on the burning soil and gaze at it, half in fear lest a touch should prove it a figment of the imagination." In a study published last month in Nature Communications, researchers report some of the genetic secrets behind Welwitschia's unique shape, extreme longevity and profound resilience.