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Mars

Scientists Just Found a 'Significant' Volume of Water Inside Mars' Grand Canyon (interestingengineering.com) 37

Scientists have discovered a world-historic discovery on Mars: "significant amounts of water" are hiding inside the Red Planet's Valles Marineris, its version of our grand canyon system, according to a recent press release from the European Space Agency (ESA). And up to 40% of material near the surface of the canyon could be water molecules. Interesting Engineering reports: The newly discovered volume of water is hiding under the surface of Mars, and was detected by the Trace Gas Orbiter, a mission in its first stage under the guidance of the ESA-Roscosmos project dubbed ExoMars. Signs of water were picked up by the orbiter's Fine Resolution Epithermal Neutron Detector (FREND) instrument, which is designed to survey the Red Planet's landscape and map the presence and concentration of hydrogen hiding in Mars' soil. It works like this: while high-energy cosmic rays plunge into the surface, the soil emits neutrons. And wet soil emits fewer neutrons than dry soil, which enables scientists to analyze and assess the water content of soil, hidden beneath its ancient surface. "FREND revealed an area with an unusually large amount of hydrogen in the colossal Valles Marineris canyon system: assuming the hydrogen we see is bound into water molecules, as much as 40% of the near-surface material in this region appears to be water," said Igor Mitrofanov, the Russian Academy of Science's lead investigator of the Space Research Institute, in the ESA press release.

"The reservoir is large, not too deep below ground, & could be easily exploitable for future explorers," read a tweet on the announcement from ExoMars. That sounds basically great! But it's too soon for Musk to pack up his bags and fly to the site, since much work is left to be done. A study accompanying the announcement, published in the journal Icarus, shows that neutron detection doesn't distinguish between ice and water molecules. This means geochemists need to enter the scientific fray to reveal more details. But several features of the canyon, including its topology, have led the researchers to speculate that the water is probably in solid form (ice). But it could also be a mixture of solid and liquid.

"We found a central part of Valles Marineris to be packed full of water -- far more water than we expected," said Alexey Malakhov, co-author of the study, in the ESA release. "This is very much like Earth's permafrost regions, where water ice permanently persists under dry soil because of the constant low temperatures." So while we don't yet know the specific form of water is lying under Mars' vast system of canyons, the first human mission to Mars may consider exploring this area a major priority.

United Kingdom

UK Reports Highest Number of Daily Covid Cases Since the Pandemic Began (cnbc.com) 180

The U.K. reported a record number of new daily Covid-19 cases on Wednesday, with 78,610 in the last 24 hours. From a report: The figure was an increase from 59,610 the day before, and it surpasses the previous high of 68,053 cases reported on Jan. 8. It underlines the dramatic surge in infections that the country is seeing ahead of the Christmas holiday period with the omicron variant expected to quickly become the dominant strain. One senior British health chief has warned that there could be "staggering" numbers in the next few days. Long queues have been seen outside vaccination centers in many U.K. cities and towns with the government putting its booster program on overdrive to try to get a third vaccine shot to as many people as possible. There were 165 new Covid deaths in the U.K. on Wednesday, according to government data. While deaths remain low currently and initial reports suggest that the omicron variant might not be any more severe than other Covid strains, health experts have repeatedly warned that the sheer number of infections could lead to mounting fatalities and an overwhelmed health-care system.
NASA

NASA's Parker Solar Probe Becomes First Spacecraft To 'Touch' the Sun (cnn.com) 63

Sixty years after NASA set the goal, and three years after its Parker Solar Probe launched, the spacecraft has become the first to "touch the sun." CNN World reports: The Parker Solar Probe has successfully flown through the sun's corona, or upper atmosphere, to sample particles and our star's magnetic fields. The announcement was made at the 2021 American Geophysical Union Fall Meeting in New Orleans on Tuesday, and research from the solar milestone has been published in the Physical Review Letters.

The Parker Solar Probe launched in 2018 and set out to circle closer and closer to the sun. Scientists, including the spacecraft's namesake astrophysicist Eugene Parker, want to answer fundamental questions about the solar wind that streams out from the sun, flinging energetic particles across the solar system. The sun's corona is much hotter than the actual surface of the star, and the spacecraft could provide insight about why. The corona is one million degrees Kelvin (1,800,000 degrees Fahrenheit) at its hottest point, while the surface is around 6,000 Kelvin (10,340 degrees Fahrenheit).

The spacecraft has already revealed surprising finds about the sun, including the 2019 discovery of magnetic zig-zag structures in the solar wind called switchbacks. Now, thanks to Parker's latest close approach to the sun, the spacecraft helped scientists determine that these switchbacks originate from the solar surface. Before Parker Solar Probe's mission is done, it will have made 21 close approaches to the sun over the course of seven years. The probe will orbit within 3.9 million miles of the sun's surface in 2024, closer to the star than Mercury -- the closest planet to the sun.

Science

Scientists Urge Creating Strategic Forest Reserves To Mitigate Climate Change, Protect Biodiversity (phys.org) 118

An anonymous reader quotes a report from Phys.Org: The United States should immediately move to create a collection of strategic forest reserves in the Western U.S. to fight climate change and safeguard biodiversity, according to a scientific collaboration led by an Oregon State University ecologist. Bev Law, her College of Forestry colleague William Ripple and other scientists from around the West argue that climate change and biodiversity are inextricably linked and that strategic forest reserves would tackle both "emergencies" while also promoting the protection of water resources.

Describing the U.S.'s natural wooded systems as "America's Amazon" and forest protection as "the lowest-cost climate mitigation option," the researchers emphasize older forests' ability to accumulate massive amounts of carbon in trees, vegetation and soils, to provide homes for wildlife and to serve as sources of water for drinking and other uses. The scientists note that multiple nations have pledged to meet goals commonly known as 30x30 and 50x50; the former calls for protecting 30% of land and water areas globally by 2030, the latter 50% by 2050. Hitting the 50x50 target is widely viewed as necessary for ensuring the Earth's biodiversity, the researchers say. [...] The scientists note that multiple nations have pledged to meet goals commonly known as 30x30 and 50x50; the former calls for protecting 30% of land and water areas globally by 2030, the latter 50% by 2050. Hitting the 50x50 target is widely viewed as necessary for ensuring the Earth's biodiversity, the researchers say.

The framework produces preservation priority rankings by using spatial metrics of biodiversity, carbon stocks and accumulation under climate change and future vulnerability to drought or wildfire. In the West the highest priority forestlands are mainly under federal ownership, with substantial areas controlled by private entities and state and tribal governments. Many federal forest lands would reach GAP 2 protection simply by phasing out grazing, mining and logging and strengthening protection via administrative rule. Inventoried roadless areas make up almost 42 million acres of national forest in the West and are readily available for permanent protection.
The researchers lay out their framework for developing the reserves in a paper published in the journal Communications Earth & Environment.

"GAP 1, as defined by the U.S. Geological Survey, refers to permanent protection such as wilderness areas and national parks, where natural disturbances such as fire can proceed without interference or are mimicked via management activities," notes Phys.Org. "On GAP 2 lands, uses or practices that degrade the quality of existing natural communities, such as road building, may be allowed, and suppression of natural disturbances is allowed as well."
Earth

Bugs Across Globe Are Evolving To Eat Plastic, Study Finds (theguardian.com) 88

Microbes in oceans and soils across the globe are evolving to eat plastic, according to a study. The research scanned more than 200m genes found in DNA samples taken from the environment and found 30,000 different enzymes that could degrade 10 different types of plastic. From a report: The study is the first large-scale global assessment of the plastic-degrading potential of bacteria and found that one in four of the organisms analysed carried a suitable enzyme. The researchers found that the number and type of enzymes they discovered matched the amount and type of plastic pollution in different locations. The results "provide evidence of a measurable effect of plastic pollution on the global microbial ecology," the scientists said.

Millions of tonnes of plastic are dumped in the environment every year, and the pollution now pervades the planet, from the summit of Mount Everest to the deepest oceans. Reducing the amount of plastic used is vital, as is the proper collection and treatment of waste. But many plastics are currently hard to degrade and recycle. Using enzymes to rapidly break down plastics into their building blocks would enable new products to be made from old ones, cutting the need for virgin plastic production. The new research provides many new enzymes to be investigated and adapted for industrial use.

NASA

New NASA Tool Helps Visualize Asteroids' Paths Through Solar System (axios.com) 4

NASA is constantly tracking potentially dangerous asteroids in Earth's vicinity, and now a new tool allows anyone to explore their paths through the solar system. From a report: There are about 28,000 near-Earth asteroids and comets tracked by astronomers to make sure they don't pose a risk to our planet. The interactive tool allows anyone using it to zoom in on specific asteroids of interest in order to learn more about the objects and their orbits. Another feature of the tool allows users to see the next five close approaches of asteroids to Earth. "We were keen to include this feature, as asteroid close approaches often generate a lot of interest," Jason Craig, one of the developers of the tool, said in a statement. "The headlines often depict these close approaches as 'dangerously' close, but users will see by using Eyes just how distant most of these encounters really are."
ISS

NASA's New Sleeping Bags Could Prevent Eyeball 'Squashing' On the ISS (engadget.com) 41

fahrbot-bot shares a report from Engadget: Becoming an astronaut requires perfect 20/20 vision, but unfortunately, the effects of space can cause astronauts to return to Earth with degraded eyesight. Now, researchers from UT Southwestern Medical Center have developed a sleeping bag that that could prevent or reduce those problems by effectively sucking fluid out of astronauts' heads. More than half of NASA astronauts that went to the International Space Station (ISS) for more than six months have developed vision problems to varying degrees. In one case, astronaut John Philips returned from a six month stint about the ISS in 2005 with his vision reduced from 20/20 to 20/100, as the BBC reported.

Fluids tend to accumulate in the head when you sleep, but on Earth, gravity pulls them back down into the body when you get up. In the low gravity of space, though, more than a half gallon of fluid collects in the head. That in turn applies pressure to the eyeball, causing flattening that can lead to vision impairment -- a disorder called spaceflight-associated neuro-ocular syndrome, or SANS. To combat SANS, researchers collaborated with outdoor gear manufacturer REI to develop a sleeping bag that fits around the waist, enclosing the lower body. A vacuum cleaner-like suction device is then activated that draws fluid toward the feet, preventing it from accumulating in the head. Around a dozen people volunteered to test the technology, and the results were positive.

United Kingdom

First UK Death Recorded With Omicron Variant (bbc.com) 179

Thelasko shares a report from the BBC: At least one person in the UK has died with the Omicron coronavirus variant, the prime minister has said. Boris Johnson said the new variant was also resulting in hospital admissions, and the "best thing" people could do was get their booster jab. Health Secretary Sajid Javid told MPs Omicron now represented 20% of cases in England. The PM has set a new target for all adults in England to be offered a booster by the end of the month. Mr Johnson said on Monday that people needed to recognize "the sheer pace at which [Omicron] accelerates through the population" and that they should set aside the idea that Omicron was a milder variant.

The UK recorded 54,661 new coronavirus cases on Monday, as well as 38 deaths within 28 days of a positive test. There are 4,713 confirmed cases of the Omicron variant but Mr Javid said the UK Health Security Agency (UKHSA) estimated the current number of daily infections was around 200,000. Omicron has risen to more than 44% of cases in London and is expected to become the dominant variant in the city in the next 48 hours, he said.

Communications

Researchers Are Hoping To 'Hear' Dark Matter Using a Super-Cooled Experiment (gizmodo.com) 16

An anonymous reader shares an excerpt from a report by Gizmodo, written by Isaac Schultz: The Dark Matter Radio project is attempting to detect hidden photons in a specific frequency range by methodically turning the dial, in what amounts to a patient, sweeping search of the wavelengths where such a particle could sound off. Later generations of the radio will hunt axions. [...] The current Dark Matter Radio experiment is the prototype, or Pathfinder, for larger projects down the line. It consists of a liter-volume cylinder made of superconducting niobium metal, around which is tightly wound niobium wire. It looks a bit like someone wound guitar string on a spool's vertical axis instead of its horizontal axis. That's the Pathfinder's inductor. If a hidden photon resonating at the frequency the Pathfinder was tuned to passed through it, the change in magnetic field would induce a voltage around the contraption's inductor. "The null hypothesis is that there shouldn't be any radio waves inside of that box unless, in this case, hidden photons, which are our particular flavor of dark matter," said Stephen Kuenstner, a physicist at Stanford University and a member of the DM Radio team. Hidden photons "can pass through the box and they have some probability of interacting with the circuit in the same way that a radio wave would," Kuenstner said.

To amplify any signal the Pathfinder picks up, there's a hexagonal shield of niobium plates sheathing the aforesaid components that acts as a capacitor. That amplified signal is then transported to a quantum sensor called a SQUID (a Superconducting QUantum Interference Device), a technology invented by the Ford Motor Company in the 1960s. The SQUID lives on the bottom of the radio and measures and records any signals picked up. The smaller the expected mass for the axion becomes, the more elusive the particle is, as its interactions with ordinary matter are proportional to its mass. So it's important that the next generation of DM Radio becomes more sensitive. The way the experiment is set up, "the frequency on the dial is the mass of the axion," [said Kent Irwin, a physicist at Stanford University and SLAC and the principal investigator of Dark Matter Radio]. Convenient! The mass of these particles doesn't even compare to the smallest things you might think of, like atoms or quarks. These particles would be somewhere between a trillionth and a millionth of an electronvolt, and an electronvolt is about a billionth of a proton's mass.

The helium Pathfinder uses is gaseous, and remains a relatively warm 4 kelvin (in other words, four degrees above absolute zero), but the next experiment -- Dark Matter Radio 50L -- will use liquified helium, cooled to less than one degree above absolute zero. All the better for hearing dark matter with. DM Radio 50L sits in the corner of a large room in the Hansen Experimental Physics Lab at Stanford. The room looks a little bit like the TV room in Willy Wonka's factory; it has high ceilings, lots of inscrutable equipment, and is glaringly white. Two 6-foot-tall dilution refrigerators on one side, abutting a deep closet, are the radio. The two machines are fed gaseous helium sitting in tanks in the next room, which they then cool down into liquid helium of a frigid 2 kelvin. Magnets inside gold-plated copper and aluminum sheathes will do the job of converting any detected axions into radio waves for physicists to interpret. "The particle physics community is -- the analogy is often said -- just like a battleship. It takes a while to turn and it has a lot of momentum," Irwin said. "So even though I think that there's a lot of reasons to believe that these radio-like dark matter signals are more attractive -- the axionic signals -- than [Weakly Interactinv Massive Particles (WIMPs)], there's still a lot of giant experiments searching for little things, which is good."
The team behind the Dark Matter Radio is "currently working with the Department of Energy on a next-next-generation experiment that will look for axions in a cubic meter, hence its name of DM Radio-m3," adds Gizmodo. "In the more distant future, Irwin and his team have aspirations for a project called DM Radio-GUT, which would be closer to the scale of some of the largest physics experiments on the planet."

"All told, Irwin said, the favored area for axion mass could be searched in the next couple of decades using larger experiments -- though the team could simply find an axion before then, potentially ending the hunt for dark matter in its entirety. With enough listening, we might have an entirely new particle for the textbooks. Or maybe there'll be radio silence."
AI

South Korea To Test AI-Powered Facial Recognition To Track COVID-19 Cases (reuters.com) 12

South Korea will soon roll out a pilot project to use artificial intelligence, facial recognition and thousands of CCTV cameras to track the movement of people infected with the coronavirus, despite concerns about the invasion of privacy. Reuters reports: The nationally funded project in Bucheon, one of the country's most densely populated cities on the outskirts of Seoul, is due to become operational in January, a city official told Reuters. The system uses an AI algorithms and facial recognition technology to analyze footage gathered by more than 10,820 CCTV cameras and track an infected person's movements, anyone they had close contact with, and whether they were wearing a mask, according to a 110-page business plan from the city submitted to the Ministry of Science and ICT (Information and Communications Technology), and provided to Reuters by a parliamentary lawmaker critical of the project.

The Bucheon official said the system should reduce the strain on overworked tracing teams in a city with a population of more than 800,000 people, and help use the teams more efficiently and accurately. [...] The Ministry of Science and ICT said it has no current plans to expand the project to the national level. It said the purpose of the system was to digitize some of the manual labour that contact tracers currently have to carry out. The Bucheon system can simultaneously track up to ten people in five to ten minutes, cutting the time spent on manual work that takes around half an hour to one hour to trace one person, the plan said.

Space

One Space Trip Emits a Lifetime's Worth of Carbon Footprint (futurism.com) 201

An anonymous reader quotes a report from Futurism: In a revelation that will surprise almost no one, the 2022 World Inequality Report found that one space flight emits more carbon dioxide than most of the world's population will create in their entire lifetime. While other parts of the report focus on labor, income and economic inequality, the researchers also included a statistic -- spotted by folks on social media and highlighted by Gizmodo -- that perfectly sums up the relationship between those who create greenhouse gases versus those who suffer most from them.

"Perhaps the most conspicuous illustration of extreme pollution associated with wealth inequality in recent years is the development of space travel," the report states. "An 11-minute flight emits no fewer than 75 tonnes of carbon per passenger About one billion individuals emit less than one tonne per person per year. Over their lifetime, this group of one billion individuals does not emit more than 75 tonnes of carbon per person." If you're wondering which space flight the World Inequality Report is addressing, well, the team didn't call anyone out by name. But Jeff Bezos' much-publicized space flight back in July was about that length of time, as Gizmodo pointed out. Bezos, the Amazon founder currently wrapped up in Blue Origin's space tourism junket, effectively puts out more carbon than most humans could create in their lifetime each time he sends up a rocket.

The World Inequality Report argues that to hold the biggest greenhouse gas emitters responsible, we need to better track global emission numbers. "Large inequalities in emissions suggest that climate policies should target wealthy polluters more," the authors write. "So far, climate policies such as carbon taxes have often disproportionately impacted low and middle income groups." It's the equivalent of being told to recycle your cardboard and pay for municipal recycling pickup, in other words -- it's a nice gesture, but no matter how hard you try, you'll never offset a single Bezos space journey.
"The report also noted that the top 1% wealthiest individuals emit about 110 tons of carbon emissions per year, an extreme number dwarf by the top .1% (467 tons) and the top .01% (2,530 tons)," notes Gizmodo.

What's absent from the report, however, are the everyday benefits of space exploration, such as scientific discoveries and the creation of scientific and technical jobs, among other things. The tradeoff between the negative carbon emissions and positive benefits of space travel remains to be seen.
Government

FAA: No More Astronaut Wings For Future Commercial Space Tourists (yahoo.com) 44

"The Federal Aviation Administration said on Friday that it was ending a program that awarded small gold pins called 'Commercial Space Astronaut Wings' to certain people who flew to space on private spacecraft," reports the New York Times. (Alternate URL here.) But before the program officially retires in January, all who applied for the gold wings after flying to space this year will still receive them, the agency said.

That means Mr. Bezos, the billionaire founder of Amazon who rode a rocket with his space company, Blue Origin, to the edge of space in July, will be considered a commercial astronaut. So will Richard Branson, the founder of the space tourism firm Virgin Galactic who flew his own company's rocket plane to space in the same month. William Shatner, the Star Trek star who flew with Blue Origin to the edge of space in October, will also receive astronaut wings to go with his Starfleet paraphernalia. Twelve other people were also added to the federal agency's list of wing recipients on Friday [bringing the list up to 30 people].

The changes will help the F.A.A. avoid the potentially awkward position of proclaiming that some space tourists are only passengers, not astronauts.

The Commercial Space Astronaut Wings Program was created by Patti Grace Smith, the first chief of the F.A.A.'s commercial space office, to promote the private development of human spaceflight — a mandate from a 1984 law that aimed to accelerate innovation of space vehicles. The program began handing out pins to qualified individuals in 2004, when Mike Melvill, a test pilot who flew the Scaled Composites SpaceShipOne plane, became its first recipient. To qualify for the commercial astronaut wings under the original guidelines, a person had to reach an altitude of at least 50 miles, the marker of space recognized by NASA and the U.S. Air Force, and be a member of the spacecraft's "flight crew..."

Although no one will receive the little gold pins after 2021, those who fly above 50 miles on an F.A.A.-licensed rocket will be honored in the agency's online database.

But future space tourists should not despair a lack of post-flight flair. Virgin Galactic, Blue Origin and SpaceX have each presented paying and guest passengers with custom-designed wings.

Or, as the Associated Press put it, "The FAA said Friday it's clipping its astronaut wings because too many people are now launching into space and it's getting out of the astronaut designation business entirely...." "The U.S. commercial human spaceflight industry has come a long way from conducting test flights to launching paying customers into space," the FAA's associate administrator Wayne Monteith said in a statement. "Now it's time to offer recognition to a larger group of adventurers daring to go to space."
Thanks to long-time Slashdot reader schwit1 for submitting the story.
Science

Scientists Discover How the SARS-CoV-2 Virus Evades Our Immune System (scitechdaily.com) 146

Long-time Slashdot reader fahrbot-bot quotes SciTechDaily: A discovery by researchers at the Texas A&M College of Medicine could lead to new therapies to prevent the virus from proliferating in the human body... The underlying mechanism of how SARS-CoV-2 escapes from the immune system has been poorly understood. However, researchers from the Texas A&M University College of Medicine and Hokkaido University have recently discovered a major mechanism that explains how SARS-CoV-2 can escape from the immune system and replicate in the human body. Their findings were recently published in the journal Nature Communications.

"We found that the SARS-CoV-2 virus carries a suppressive gene that acts to inhibit a human gene in the immune system that is essential for destroying infected cells," said Dr. Koichi Kobayashi, adjunct professor at the College of Medicine and lead author of the paper.

Naturally, the cells in a human's immune system are able to control virus infection by destroying infected cells so that the virus cannot be replicated. The gene that is essential in executing this process, called NLRC5, regulates major histocompatibility complex (MHC) class I genes, which are genes that create a pathway that is vital in providing antiviral immunity. Kobayashi and his colleagues discovered this in 2012.

"During infection, the amount and activity of NLRC5 gene become augmented in order to boost our ability of eradication of viruses," Kobayashi said. "We discovered that the reason why SARS-CoV-2 can replicate so easily is because the virus carries a suppressive gene, called ORF6, that acts to inhibit the function of NLRC5, thus inhibiting the MHC class I pathway as well."

NASA

NASA's Next-Generation Asteroid Impact Monitoring System Goes Online (nasa.gov) 11

"To date, nearly 28,000 near-Earth asteroids have been found by survey telescopes that continually scan the night sky, adding new discoveries at a rate of about 3,000 per year..." according to an article from NASA:

"The first version of Sentry was a very capable system that was in operation for almost 20 years," said Javier Roa Vicens, who led the development of Sentry-II while working at JPL as a navigation engineer and recently moved to SpaceX. "It was based on some very smart mathematics: In under an hour, you could reliably get the impact probability for a newly discovered asteroid over the next 100 years — an incredible feat."
But RockDoctor (Slashdot reader #15,477), summarizes some new changes: For nearly 20 years, newly discovered asteroids had orbital predictions processed by a system called "Sentry", resulting in quick estimates on the impact risk they represent with Earth. Generally this has worked well, but several things in the future required updates, and a new system adds a number of useful features too.

The coming wave of big survey telescopes which will check the whole sky every few days is going to greatly increase the number of discoveries. That requires streamlining of the overall system to improve processing speed. The new system can also automatically incorporate factors which previously required manual intervention to calculate, particularly the effect of asteroid rotation creating non-gravitational forces on a new discovery's future orbit. Objects like asteroid Bennu (recently subject of a sampling mission) had significant uncertainty on their future path because of these effects. That doesn't mean that Bennu can possibly hit us in the next few centuries, but it became harder to say over the next few millennia. As NASA puts it:

Popular culture often depicts asteroids as chaotic objects that zoom haphazardly around our solar system, changing course unpredictably and threatening our planet without a moment's notice. This is not the reality. Asteroids are extremely predictable celestial bodies that obey the laws of physics and follow knowable orbital paths around the Sun.

But sometimes, those paths can come very close to Earth's future position and, because of small uncertainties in the asteroids' positions, a future Earth impact cannot be completely ruled out. So, astronomers use sophisticated impact monitoring software to automatically calculate the impact risk....

[T]he researchers have made the impact monitoring system more robust, enabling NASA to confidently assess all potential impacts with odds as low as a few chances in 10 million.



The article includes videos explaining the future uncertainties on the orbits of potentially hazardous asteroids Bennu and Apophis.

Math

'When a Newspaper Publishes an Unsolvable Puzzle' (10zenmonkeys.com) 23

Slashdot reader DevNull127 writes: It's a newspaper puzzle that's like Sudoku, except it's impossible. [Sort of...] They call it "The Challenger" puzzle — but when the newspaper leaves out a crucial instruction, you can end up searching forever for a unique solution which doesn't exist!

"If you're thinking 'This could be a 9 or an 8....' — you're right!" complains Lou Cabron. "Everyone's a winner today! Just start scribbling in numbers! And you'd be a fool to try to keep narrowing them down by, say, using your math and logic skills. A fool like me..." (Albeit a fool who once solved a Sudoku puzzle entirely in his head.) But two hours of frustration later — and one night of bad dreams — he's stumbled onto the web page of Dr. Robert J. Lopez, an emeritus math professor in Indiana, who's calculated that in fact Challenger puzzles can have up to 190 solutions... and there's more than one solution for more than 97% of them!

At the end of the day, it becomes an appreciation for the local newspaper, and the puzzles they run next to the funnies. But with a friendly reminder "that they ought to honor and respect that love — by always providing the complete instructions."

The Internet

Is the Internet Changing the Way We Remember? (nbcnews.com) 54

"A study in 2019 found that the spatial memory used for navigating through the world tends to be worse for people who've made extensive use of map apps and GPS devices..." reports NBC News.

But that's just the beginning, according to Adrian Ward, who studies psychology at the University of Texas at Austin. NBC says Ward's research suggests "People who lean on a search engine such as Google may get the right answers but they can also end up with a wrong idea of how strong their own memory is." In Ward's research, published in October in the journal Proceedings of the National Academy of Sciences of the United States, he used a series of eight experiments to test how people used and thought about their own knowledge as they completed short quizzes of general knowledge. Some participants had access to Google while answering the questions — "What is the most widely spoken language in the world?" was one — while others did not. They also completed surveys. He found that people who used Google were more confident in their own ability to think and remember, and erroneously predicted that they would know significantly more in future quizzes without the help of the internet. Ward attributed that to Google's design: simple and easy, less like a library and more like a "neural prosthetic" that simulates a search in a human brain.

"The speed makes it so you never understand what you don't know," Ward said.

The findings echo and build on earlier research, including a widely cited 2011 paper on the "Google effect": a phenomenon in which people are less likely to remember information if they know they can find it later on the internet.... In a review of recent studies in the field, published in September, researchers at Duke University found that the "externalization" of memories into digital spheres "changes what people attend to and remember about their own experiences." Digital media is new and different, they wrote, because of factors such as how easily images are edited or the huge number of memories at people's fingertips.

Each photographic cue means another chance for a memory to be "updated," maybe with a false impression, and each manipulation of a piece of social media content is a chance for distortion, wrote the researchers, doctoral student Emmaline Drew Eliseev and Elizabeth Marsh, a professor of psychology and neuroscience and director of a lab dedicated to studying memory.

Medicine

New Medicine Could Replace Reading Glasses with Eye Drops (cbsnews.com) 87

New FDA-approved eye drops could replace reading glasses for millions: "It's definitely a life changer" "A newly approved eye drop hitting the market on Thursday could change the lives of millions of Americans with age-related blurred near vision, a condition affecting mostly people 40 and older," reports CBS News.

"Vuity, which was approved by the Food and Drug Administration in October, would potentially replace reading glasses for some of the 128 million Americans who have trouble seeing close-up." The new medicine takes effect in about 15 minutes, with one drop on each eye providing sharper vision for six to 10 hours, according to the company.... Vuity is the first FDA-approved eye drop to treat age-related blurry near vision, also known as presbyopia. The prescription drug utilizes the eye's natural ability to reduce its pupil size, said Dr. George Waring, the principal investigator for the trial.

"Reducing the pupil size expands the depth of field or the depth of focus, and that allows you to focus at different ranges naturally," he said.

A 30-day supply of the drug will cost about $80 and works best in people 40 to 55 years old, a Vuity spokesperson said. Side effects detected in the three-month trial included headaches and red eyes, the company said.

Medicine

COVID Booster Cuts Death Rate by 90%, Israeli Study Finds (usnews.com) 154

An Israeli study tracked more than 843,000 people who received two doses of the Pfizer vaccine — and then explored whether the results improved for the 758,000 who then also got a booster shot.

The results? HealthDay reports: Boosted folks are 90% less likely to die from a Delta infection than people relying solely on the initial two-dose vaccination, Israeli data show.

That protection will be critically important during the next couple of months as the Delta variant continues to dominate throughout the United States, said Dr. William Schaffner, medical director of the National Foundation for Infectious Diseases. "While we are preoccupied with Omicron, you need to remember that Delta is essentially in every town and city in the United States today — being transmitted, infecting new people, sending people to the hospital, in some parts of the country stressing the health care system once again," Schaffner said. "Although we have Omicron in the United States and it's starting to take hold, nonetheless well over 95% of all new infections today are caused by Delta...."

A second study out of Israel focused on infection and severity of illness, and it also produced good tidings for boosters in the face of the Delta variant. This study involved nearly 4.7 million Israelis who'd been fully vaccinated with Pfizer and were eligible for boosters. Confirmed infections were tenfold lower in the group of people who got the Pfizer booster, researchers reported. Further, results showed that the longer a booster was in a person's system, the more resistant they became to infection from the Delta strain.

Space

Blue Origin Helps Humanity Set a New Record for Spaceflight (cnbc.com) 53

Blue Origin successfully completed a 10-minute suborbital spaceflight this morning.

But with SpaceX, Virgin Galactic, and the space agencies of Russia and China, Blue Origin also helped humanity achieve another milestone Saturday. The Washington Post explains how it will push us far past a record set in 1985 when America's space shuttle made nine flights into space: Saturday's launch will be the 13th human spaceflight of the year, two more than in 1985, when NASA carried out those nine shuttle flights, and the Russian Soyuz vehicle carried astronauts on two launches.

All of those flights reached orbit, while several of the flights this year barely scratched the edge of space in relatively short suborbital jaunts. Still, this year is "the busiest year in human spaceflight," Jennifer Levasseur, a curator at the National Air and Space Museum in Washington, said in an interview. "We're entering a new phase of activity that we've never, frankly, seen before. And it creates a lot of excitement."

Saturday's Blue Origin flight will also carry Dylan Taylor, chairman and CEO of space exploration firm Voyager Space; Evan Dick, an investor; Lane and Cameron Bess, the first parent-child pair to fly to space; and Laura Shepard Churchley, a daughter of Alan Shepard, the first American to go to space...

China, which is building a space station in low Earth orbit, flew two crewed missions this year, and Russia has flown three, including the flight this week. The flurry of activity is reminiscent of 1985, Levasseur said, a time when NASA was optimistic that it would fly dozens of times a year, carrying all sorts of people to space.

The Post ultimately calls 2021 "one of the most remarkable years for human spaceflight."
Space

FAA Says Lack of Federal Whistleblower Protections Is 'Enormous Factor' Hindering Blue Origin Safety Review (cnn.com) 24

Jackie Wattles writes via CNN Business: Jeff Bezos' rocket company, Blue Origin, became the subject of a federal review this fall after a group of 21 current and former employees co-signed an essay that raised serious questions about the safety of the company's rockets -- including the rocket making headlines for flying Bezos and other celebrities to space. But that review was hamstrung by a lack of legal protections for whistleblowers in the commercial spaceflight industry, according to emails from Federal Aviation Administration investigators that were obtained by CNN Business. The FAA also confirmed in a statement Friday that its Blue Origin review is now closed, saying the "FAA investigated the safety allegations made against Blue Origin's human spaceflight program" and "found no specific safety issues."

The emails obtained by CNN Business, however, reveal that investigators were not able to speak with any of the engineers who signed the letter anonymously. Investigators also were not able to go to Blue Origin and ask for documents or interviews with current employees or management, according to the FAA. The situation highlights how commercial spaceflight companies like Blue Origin are operating in a regulatory bubble, insulated from much of the scrutiny other industries are put under. There are no federal whistleblower statues that would protect employees in the commercial space industry if they aid FAA investigators, according to the agency.

The commercial space industry is in a legally designated "learning period" until at least October 2023 -- a "learning period" that has been extended several times, most recently by a 2015 law called the Commercial Space Launch Competitiveness Act. The idea is to allow the industry to mature and give companies a chance to self-regulate without overbearing government interference. But that designation effectively bars federal regulators from implementing certain new rules or wielding the same oversight powers for commercial space companies as it does for aviation. That meant that investigators had to rely on current and former Blue Origin employees voluntarily coming forward to offer information.

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