NASA is heading back to the Red Planet. The agency launched a new rover, a car-size robotic explorer named Perseverance, to Mars on an ambitious mission to scour the planet for evidence of ancient life. From a report: The rover, which launched into orbit Thursday at 7:50 a.m. ET, is designed to study the geology and climate of Mars. NASA says the mission and its subsequent discoveries could lay the groundwork for eventual human exploration of the Red Planet. Perseverance is loaded with seven scientific instruments to explore the Martian landscape and assess whether the planet was ever able to sustain life. The six-wheel rover is also carrying a small helicopter, dubbed Ingenuity, to perform experimental test flights in Mars' thin atmosphere, which, if successful, would mark a milestone in powered flight.

"For the first time ever, we're going to fly a helicopter on another planet," NASA Administrator Jim Bridenstine said Monday in a news briefing, adding that future missions to other worlds could use similar helicopters as airborne scouts. The Perseverance rover launched aboard an Atlas V rocket from Cape Canaveral Air Force Station in Florida. Typically, crowds gather along beaches near Cape Canaveral to witness NASA launches, but because of the coronavirus pandemic, the agency encouraged space fans to stay home and participate virtually, instead -- particularly as new infections continue to surge in Florida and across the country. Matt Wallace, the mission's deputy project manager at NASA's Jet Propulsion Laboratory in Pasadena, California, said the rover has already lived up to its name, as engineers persevered through the pandemic to ready the spacecraft for its much-anticipated launch. "Nothing prepared us for what we had to deal with in the middle of March as the pandemic struck -- not just our team, but communities across the country and the world," Wallace said. "At that point in the mission, we were in our final assembly activities."

An anonymous reader quotes a report from NPR: Researchers have announced that they have solved a centuries-long mystery surrounding the origin of most of the large stones that make up the outer ring of Stonehenge, in an article published to the journal Science Advances on Wednesday. Using geochemical data, researchers have determined that 50 of the 52 large stones, sarsen megaliths, originated from the West Woods in Wiltshire, England, some 15 miles from where the prehistoric monument stands. The smaller stones near the center of the structure, called bluestones, had previously been traced to Wales, nearly 125 miles away. Researchers still don't know exactly how the 30-ton stones were transported. "How they were moved to the site is still really the subject of speculation," David Nash, University of Brighton geomorphologist and lead researcher on the study, told Reuters.

"Given the size of the stones, they must have either been dragged or moved on rollers to Stonehenge. We don't know the exact route but at least we now have a starting point and an endpoint."

Jennifer Chu writes via Phys.Org: At least twice in Earth's history, nearly the entire planet was encased in a sheet of snow and ice. These dramatic "Snowball Earth" events occurred in quick succession, somewhere around 700 million years ago, and evidence suggests that the consecutive global ice ages set the stage for the subsequent explosion of complex, multicellular life on Earth. Scientists have considered multiple scenarios for what may have tipped the planet into each ice age. While no single driving process has been identified, it's assumed that whatever triggered the temporary freeze-overs must have done so in a way that pushed the planet past a critical threshold, such as reducing incoming sunlight or atmospheric carbon dioxide to levels low enough to set off a global expansion of ice.

But MIT scientists now say that Snowball Earths were likely the product of "rate-induced glaciations." That is, they found the Earth can be tipped into a global ice age when the level of solar radiation it receives changes quickly over a geologically short period of time. The amount of solar radiation doesn't have to drop to a particular threshold point; as long as the decrease in incoming sunlight occurs faster than a critical rate, a temporary glaciation, or Snowball Earth, will follow. These findings, published in the Proceedings of the Royal Society A, suggest that whatever triggered the Earth's ice ages most likely involved processes that quickly reduced the amount of solar radiation coming to the surface, such as widespread volcanic eruptions or biologically induced cloud formation that could have significantly blocked out the sun's rays.

Airbus-France will build the huge satellite that brings the first Martian rock samples back to Earth. The BBC reports: This material will be drilled on the Red Planet by the US space agency's next rover, Perseverance, before being blasted into orbit by a rocket. It'll be the Airbus satellite's job to grab the packaged samples and then ship them home. The joint American-European project is expected to cost billions and take just over a decade to implement. But scientists say it's probably the best way to confirm whether life has ever existed on the Red Planet. Any evidence is likely to be controversial and will need the powerful analytical tools only found in Earth laboratories to convince the doubters, the researchers argue.

The Airbus satellite will be a Goliath among spacecraft. The Earth Return Orbiter (ERO) will weigh 6.5 tonnes at launch in 2026 and use a mix of chemical and electric propulsion to get to Mars, orbit the planet and then return to Earth with its rock consignment. Thales Alenia Space of Italy will be a lead subcontractor working on this aspect of the design. The inclusion of a powerful ion engine will require a lot power, hence the use of immense solar arrays. These panels will give the satellite a "wingspan" of 39m, more than 120ft. But the really remarkable facet of the satellite's mission is the game of catch it will have to play high above Mars. Nasa will put a rocket on the planet later this decade to fire the rocks collected by Perseverance into orbit. The Airbus spacecraft will have to manoeuvre itself into a position to capture these samples that will be packaged inside a football-sized container. After ingesting this container, the satellite must then prepare it for return to Earth. "This is not just twice as difficult as any typical Mars mission; it's twice squared - when you think about the complexity involved," said Dr David Parker, the director of human and robotic exploration at the European Space Agency (Esa). "And this satellite that Airbus will build -- I like to call it 'the first interplanetary cargo ship,' because that's what it will be doing. It's designed to carry cargo between Mars and Earth," he told BBC News.

Moderna's vaccine candidate against Covid-19 protected against the virus in a trial that inoculated 16 monkeys, an encouraging step on the path to a defense for humans against the pandemic. Bloomberg reports: Two injections of the vaccine protected against heavy exposure to the virus at two different levels of dosage, Moderna said in findings published Tuesday in the New England Journal of Medicine. The primates didn't show any sign of creating enhanced disease, a problem that has occasionally been associated with vaccines. The results, if they hold up in humans, suggest that the vaccine may be able to protect against Covid-19 in both the upper and lower airways. In all the monkeys who got the high doses of the vaccine, no viral replication was detectable in their noses two days after being challenged with the virus, according to the study results. And no viral replication was seen in the lung fluid of 7 of 8 animals in both dose groups after being challenged with the virus. All 16 monkeys showed at least some sign of protection, with limited lung inflammation seen in the lungs of both groups. The report says that the phase 3 trial, which involves 30,000 humans, will begin producing data in November or December.

If you're curious about how a vaccine trial works, Slashdot interviewed technology journalist and marketer Jennifer Riggins, who is participating in the Oxford Vaccine Trial.

Speaker Nancy Pelosi says she will require all House members and aids to wear masks on the floor, after Texas Rep. Louie Gohmert who has at times flouted the health recommendation tested positive for COVID-19 earlier in the day. The Hill reports: "Members and staff will be required to wear masks at all times in the hall of the House except that members may remove their masks temporarily when recognized," Pelosi said from the House floor. Pelosi warned that lawmakers and staff without masks will not be permitted to enter the House chamber and risk removal by the Sergeant at Arms if they don't comply. Pelosi said that the mask requirement is "a sign of respect for the health, safety and well-being of others present in the chamber and surrounding areas." Public health experts, backed by multiple studies, say that masks are an effective way to prevent spread of viral droplets.

An anonymous reader quotes a report from The New York Times: In a video posted Monday online, a group of people calling themselves "America's Frontline Doctors" and wearing white medical coats spoke against the backdrop of the Supreme Court in Washington, sharing misleading claims about the virus, including that hydroxychloroquine was an effective coronavirus treatment and that masks did not slow the spread of the virus. [...] The members of the group behind Monday's video say they are physicians treating patients infected with the coronavirus. But it was unclear where many of them practice medicine or how many patients they had actually seen. As early as May, anti-Obamacare conservative activists called the Tea Party Patriots Action reportedly worked with some of them to advocate loosening states' restrictions on elective surgeries and nonemergency care. On July 15, the group registered a website called "America's Frontline Doctors," domain registration records show. One of the first copies of the video that appeared on Monday was posted to the Tea Party Patriots' YouTube channel, alongside other videos featuring the members of "America's Frontline Doctors."

The video did not appear to be anything special. But within six hours, President Trump and his son Donald Trump Jr. had tweeted versions of it, and the right-wing news site Breitbart had shared it. It went viral, shared largely through Facebook groups dedicated to anti-vaccination movements and conspiracy theories such as QAnon, racking up tens of millions of views. Multiple versions of the video were uploaded to YouTube, and links were shared through Twitter. Facebook, YouTube and Twitter worked feverishly to remove it, but by the time they had, the video had already become the latest example of misinformation about the virus that has spread widely. That was because the video had been designed specifically to appeal to internet conspiracists and conservatives eager to see the economy reopen, with a setting and characters to lend authenticity. It showed that even as social media companies have sped up response time to remove dangerous virus misinformation within hours of its posting, people have continued to find new ways around the platforms' safeguards. [...] At least one version of the video, viewed by The Times on Facebook, was watched over 16 million times.

An anonymous reader quotes a report from The Guardian: Researchers at the University of York traced the source of underarm odor to a particular enzyme in a certain microbe that lives in the human armpit. To prove the enzyme was the chemical culprit, the scientists transferred it to an innocent member of the underarm microbe community and noted -- to their delight -- that it too began to emanate bad smells. The work paves the way for more effective deodorants and antiperspirants, the scientists believe, and suggests that humans may have inherited the mephitic microbes from our ancient primate ancestors.

Writing in the journal Scientific Reports, the York scientists describe how they delved inside Staphylococcus hominis to learn how it made thioalcohols. They discovered an enzyme that converts Cys-Gly-3M3SH released by apocrine glands into the pungent thioalcohol, 3M3SH. The bacteria take up the molecule and eat some of it, but the rest they spit out, and that is one of the key molecules we recognize as body odor. Having discovered the "BO enzyme", the researchers confirmed its role by transferring it into Staphylococcus aureus, a common relative that normally has no role in body odor. "Just by moving the gene in, we got Staphylococcus aureus that made body odor," one of the researchers said. "Our noses are extremely good at detecting these thioalcohols at extremely low thresholds, which is why they are really important for body odor. They have a very characteristic cheesy, oniony smell that you would recognize. They are incredibly pungent."

A decimal point error at e-commerce site Etsy briefly caused the company to overcharge for shipping labels by thousands of dollars. PCMag reports: Etsy sellers took to social media on Monday to notify the company about the problem. Apparently, the e-commerce site's accounting system failed to notice the decimal point when charging for the total cost for shipping labels. As a result, one merchant who thought they were paying $11.64 for postage ended up being billed $1,164. In other cases, the glitch caused Etsy to accidentally empty bank accounts.

"I just lost $11k. Emptied my Etsy account, drained my bank account, maxxed out my overdraft protection, and maxxed out my credit card.... all for what should have been $110 in labels," tweeted one seller. "Do not ship through Etsy," wrote another seller. "Right now they are charging you $350 for $3.50 shipping labels, their system is fucking up a decimal." The glitch also caused many merchants to stop sending out packages with labels printed from Etsy, which has over 2.8 million active sellers. Fortunately, the company began fixing the problem last night. "This issue has now been resolved and we have credited impacted sellers for the incorrect fees," the company said in a customer support ticket. "Accurate charges are now reflected in affected sellers' payment accounts. For the small group of sellers that were autobilled, we have refunded any resulting card charges."

An anonymous reader quotes a report from Motherboard: Two theoretical physicists specializing in complex systems conclude that global deforestation due to human activities is on track to trigger the "irreversible collapse" of human civilization within the next two to four decades. If we continue destroying and degrading the world's forests, Earth will no longer be able to sustain a large human population, according to a peer-reviewed paper published this May in Nature Scientific Reports. They say that if the rate of deforestation continues, "all the forests would disappear approximately in 100-200 years." "Clearly it is unrealistic to imagine that the human society would start to be affected by the deforestation only when the last tree would be cut down," they write.

This trajectory would make the collapse of human civilization take place much earlier due to the escalating impacts of deforestation on the planetary life-support systems necessary for human survival -- including carbon storage, oxygen production, soil conservation, water cycle regulation, support for natural and human food systems, and homes for countless species. In the absence of these critical services, "it is highly unlikely to imagine the survival of many species, including ours, on Earth without [forests]" the study points out. "The progressive degradation of the environment due to deforestation would heavily affect human society and consequently the human collapse would start much earlier." The paper is written by career physicists Dr Gerardo Aquino, a research associate at the Alan Turing Institute in London currently working on political, economic and cultural complex system modeling to predict conflicts; and Professor Mauro Bologna of the Department of Electronic Engineering at the University of Tarapaca in Chile.

"Calculations show that, maintaining the actual rate of population growth and resource consumption, in particular forest consumption, we have a few decades left before an irreversible collapse of our civilization," the paper concludes. "In conclusion our model shows that a catastrophic collapse in human population, due to resource consumption, is the most likely scenario of the dynamical evolution based on current parameters... we conclude from a statistical point of view that the probability that our civilization survives itself is less than 10 percent in the most optimistic scenario. Calculations show that, maintaining the actual rate of population growth and resource consumption, in particular forest consumption, we have a few decades left before an irreversible collapse of our civilization."

The fastest supercomputer in the U.S. is being put to work in the search for a vaccine to prevent the coronavirus and treat those infected by it. From a report: The Summit, housed in the U.S. Energy Department's Oak Ridge National Laboratory in Tennessee, is capable of 200,000 trillion calculations per second. It is being used to analyze health data as part of the Covid-19 Insights Partnership announced Tuesday by the agency as well as the departments of Veterans affairs and Health and Human Services. "Summit's unmatched capacity to analyze massive integrated datasets and divine insights will help researchers identify and advance potential treatments and enhance outcomes for Covid-19 patients with unprecedented speed," the agencies said in a statement. The Energy Department said earlier this year that its computers were being used to help the Centers for Disease Control and Prevention and the World Heath Organization conduct modeling on the virus.

sciencehabit writes: Microbes buried beneath the sea floor for more than 100 million years are still alive, a new study reveals. When brought back to the lab and fed, they started to multiply. The microbes are oxygen-loving species that somehow exist on what little of the gas diffuses from the ocean surface deep into the seabed. The discovery raises the "insane" possibility, as one of the scientists put it, that the microbes have been sitting in the sediment dormant, or at least slowly growing without dividing, for eons. The new work demonstrates "microbial life is very persistent, and often finds a way to survive," says Virginia Edgcomb, a microbial ecologist at the Woods Hole Oceanographic Institution who was not involved in the work.

What's more, by showing that life can survive in places biologists once thought uninhabitable, the research speaks to the possibility of life elsewhere in the Solar System, or elsewhere in the universe. "If the surface of a particular planet does not look promising for life, it may be holding out in the subsurface," says Andreas Teske, a microbiologist at the University of North Carolina, Chapel Hill, who was also not involved with the new study. Researchers have known that life exists "under the floorboards" of the ocean for more than 15 years. But geomicrobiologist Yuki Morono of the Japan Agency for Marine-Earth Science and Technology wanted to know the limits of such life. Microbes are known to live in very hot or toxic environments, but can they live where there's little food to eat? To find out, Morono and his colleagues mounted a drilling expedition in the South Pacific Gyre, a site of intersecting ocean currents east of Australia that is considered the deadest part of the world's oceans, almost completely lacking the nutrients needed for survival. When they extracted cores of clay and other sediments from as deep as 5700 meters below sea level, they confirmed the samples did indeed contain some oxygen, a sign that there was very little organic material for bacteria to eat.

sciencehabit shares a report from Science Magazine: Researchers have found that when everything from icebergs to rocks breaks apart, their pieces tend to resemble cubes. The finding suggests a universal rule of fragmentation at scales ranging from the microscopic to the planetary. The scientists started their study "fragmenting" an abstract cube in a computer simulation by slicing it with 50 two-dimensional planes inserted at random angles. The planes cut the cube into 600,000 fragments, which were, on average, cubic themselves -- meaning that, on average, the fragments had six sides that were quadrangles, although any individual fragment need not be a cube. The result led the researchers to suspect that cubes might be a common feature of fragmentation.

The researchers tried to confirm this hunch using real-world measurements. They headed to an outcrop of the mineral dolomite on the mountain Harmashatarhegy in Budapest, Hungary, and counted the number of vertices in cracks in the stone face. Most of these cracks formed squarish shapes, which is one of the faces of a cube, regardless of if they had been weathered naturally or had been created by humans dynamiting the mountain. Finally, the team created more-powerful supercomputer simulations modeling the breakup of 3D materials under idealized conditions -- like a rock being pulled equally in all directions. Such cases formed polyhedral pieces that were, in an average sense, cubes. The researchers reported their findings in Proceedings of the National Academy of Sciences.

A tiny piece of Martian basalt the size of a 10p coin will be launched on board a U.S. robot probe on Thursday and propelled towards the red planet on a seven-month journey to its home world. The Guardian reports: This extraordinary odyssey, the interplanetary equivalent of sending coals to Newcastle, will form a key part of Nasa's forthcoming Mars 2020 expedition. Space engineers say the rock -- which has been donated by the Natural History Museum in London -- will be used to calibrate detectors on board the robot rover Perseverance after it lands and begins its search for signs of past life on the planet. "When you turn on instruments and begin to tune them up before using them for research, you calibrate them on materials that are going to be like the unknown substances you are about to study. So what better for studying rocks on Mars than a lump that originated there?" said Professor Caroline Smith, the Natural History Museum's principal curator of meteorites.

Scientists were confident that the rock they were returning to Mars originated on the planet, added Smith, who is also a member of the Mars 2020 science team. "Tiny bubbles of gas trapped inside that meteorite have exactly the same composition as the atmosphere of Mars, so we know our rock came from there." It is thought that the Martian meteorite was created when an asteroid or comet plunged into the planet about 600,000 to 700,000 years ago, spraying debris into space. One of those pieces of rubble swept across the solar system and eventually crashed on to Earth. That meteorite -- now known as SAU 008 -- was discovered in Oman in 1999 and has been in the care of the Natural History Museum since then.

Among the instruments fitted to the Perseverance rover is a high-precision laser called Sherloc, which will be used to decipher the chemical composition of rocks and determine if they might contain organic materials that indicate life once existed -- or still exists -- on Mars. The inclusion of a piece of SAU 008 is intended to ensure this is done with maximum accuracy. Once Perseverance has selected the most promising rocks it can find, it will dump them in caches on the Martian surface. These will then be retrieved by subsequent robot missions and blasted into space towards Earth for analysis.

The desert locust upsurge is yet another of 2020's horrors. From a report: In June, remote sensing analyst Raj Bhagat noticed a strange signal on India's weather radar. It looked like a small band of rain near Delhi, moving southwest, but Bhagat was convinced it was a locust swarm. "People began to report it," he says, referring to sightings on the ground. Giant locust swarms had spread to northern India earlier in the year, ravaging crops and destroying people's livelihoods. "The timelines were perfectly matching." In mid-July, Bhagat, who works at the World Resources Institute India, identified a similar formation, this time near the city of Lucknow. He posted it to Twitter with the hashtag #LocustsAttack. The desert locust upsurge is yet another of 2020's horrors. In dry years, the insects, which can grow up to four inches long and are shades of green, black, or yellow depending on their life stage, remain localized to the deserts of Africa, the Middle East, and southwest Asia. Lately, however, the weather has been wetter than usual. Desert locusts have bred prolifically and migrated in huge swarms to countries that don't always see them in large numbers, including several nations along the horn of Africa. Other places, such as the state of Uttar Pradesh in India, haven't had a locust invasion in decades.

The locust outbreak is currently classed by the United Nations Food and Agricultural Organization (FAO) as an "upsurge." If the insects begin migrating in large bands -- which could happen within a couple years, should things worsen -- they'll be officially considered a plague. A swarm covering one square kilometer eats as much food as 35,000 people every day. The damage done so far is already appalling. The UN says the food supply of 25 million people in East Africa has been threatened by the insects. In Ethiopia alone, they've destroyed around 200,000 hectares of crops. Meanwhile, in India, the insects have chewed up 50,000 hectares. The recent outbreak may be just a hint of what is to come, thanks to the extreme weather expected as a result of climate change. Such conditions, including periods of excessive rainfall, would be adored by the locusts, says Keith Cressman, senior locust forecasting officer at the FAO. The locusts' wanderlust has sparked efforts to develop tools to closely track the insects. The FAO already uses real-time reports from locust survey teams on the ground and satellite imagery of vegetation and weather events to help forecast how many locusts will breed and where they will go.

Countries use data on locust migrations to determine where to send teams in efforts vanquish the insects en masse by dropping pesticide on them from planes. Among the technologies that could improve locust surveillance by pinpointing locations of multiple swarms at a given moment are radar and drones. The idea of using remote sensing technologies like radar to spy on locust swarms is not new. A 1955 letter in the journal Nature reported the first such sighting on British naval radar the previous year. HMS Wild Goose had detected a humongous 48-kilometer-wide swarm of desert locusts flying over the Persian Gulf. Bhagat says he thinks his sightings are the first weather radar detections of locusts in India, though his observations haven't been confirmed yet. Ryan Neely III, an atmospheric scientist at the University of Leeds in the U.K., is building a specialized system to do the same kind of analysis. It is absolutely possible to use weather radar to spot the insects, he says. They are, after all, not that dissimilar from large raindrops.

Scientists are conducting preliminary tests of COVID-19 drugs using 3D printed human organs, eliminating the need to perform tests on animals, or, of course, humans. The Week reports: For example, Anthony Atala, the director of the Wake Forest Institute for Regenerative Medicine, and his team are using 3-D printers to create tiny replicas of human organs, including miniature lungs and colons, which are particularly affected by the coronavirus. They send them overnight for testing at a biosafety lab at George Mason University. The idea predated the coronavirus -- Atala said he never thought "we'd be considering this for a pandemic" -- but it could come in handy and help expedite the experimental drug process, especially since Atala said his Winston-Salem, North Carolina-based lab can churn out thousands of printed organs per hour. "The 3-D models can circumvent animal testing and make the pathway stronger from the lab to the clinic," said Akhilesh Gaharwar, who directs a lab in the biomedical engineering at Texas A&M University. Further reading: The New York Times

In a report published today by the National Institutes of Science and Technology (NIST), a physical sciences laboratory and non-regulatory agency of the U.S. Department of Commerce, researchers attempted to evaluate the performance of facial recognition algorithms on faces partially covered by protective masks. They report that even the best of the 89 commercial facial recognition algorithms they tested had error rates between 5% and 50% in matching digitally applied masks with photos of the same person without a mask. From a report: "With the arrival of the pandemic, we need to understand how face recognition technology deals with masked faces," Mei Ngan, a NIST computer scientist and a coauthor of the report, said in a statement. "We have begun by focusing on how an algorithm developed before the pandemic might be affected by subjects wearing face masks. Later this summer, we plan to test the accuracy of algorithms that were intentionally developed with masked faces in mind."

The study -- part of a series from NIST's Face Recognition Vendor Test (FRVT) program conducted in collaboration with the Department of Homeland Security's Science and Technology Directorate, the Office of Biometric Identity Management, and Customs and Border Protection -- explored how well each of the algorithms was able to perform "one-to-one" matching, where a photo is compared with a different photo of the same person. (NIST notes this sort of technique is often used in smartphone unlocking and passport identity verification systems.) The team applied the algorithms to a set of about 6 million photos used in previous FRVT studies, but they didn't test "one-to-many" matching, which is used to determine whether a person in a photo matches any in a database of known images. Because real-world masks differ, the researchers came up with nine mask variants to test, which included differences in shape, color, and nose coverage.

Humans on the moon and Mars would face the problem of damaging space radiation.

But new research suggests one possible solution to the fact that "Space wants to kill you," according to CNET: To protect astronauts, scientists have been studying an unusually hardy organism, discovered in one of the most radioactive places on the planet: Chernobyl... In some parts of the plant, the level of radiation spiked so high that exposure would kill a human in about 60 seconds. But several species of fungi have been discovered in the reactor. And they're thriving, "feeding" on the extreme levels of radiation. A new study, yet to undergo peer review, was published on the pre-print repository bioRxiv on July 17 and examines one of these species, Cladosporium sphaerospermum. It suggests the fungi could be used as a self-healing, self-replicating shield to protect astronauts in deep space...

Researchers placed the fungi aboard the ISS for 30 days and analyzed its ability to block radiation... The proof-of-concept study showed that the fungi was able to adapt to microgravity and thrive on radiation. It was able to block some of the incoming radiation, decreasing the levels by almost 2%. One of the major advantages, the researchers write, is the fungi self-replicates from microscopic amounts. You would only need to send a small amount to orbit, give it some nutrients and let it replicate, forming a biological radiation shield. With some tweaking, the fungi could be used to shield bases on the moon or Mars.

It's a long while until we put boots on the red planet, but the groundwork is being laid now.

Jennifer Riggins is participating in the Oxford Vaccine Trial. She's an American technology journalist and marketer who's self-employed in London — and she's also agreed to answer some questions from Slashdot!

Slashdot: Can you give me any details on what it's like when you go in for your shots? (Like, are they somber, or enthusiastic...?) Do you chat at all? Do they know you by name?

JR: For sure they know me by name, at least after glancing at charts or if I call the hotline. The doctors and nurses don't know which dose I got — this COVID vaccine or the placebo which is the meningitis vaccine. It's their job to make me feel comfortable so I stay volunteering and they can get as much info from me (like about reactions) as they can.

It's actually a lot of fun for me. I love the medical talk and ask loads of questions and they are totally transparent and kind.

Plus working from home with my also full-time-working husband and our three year old during the pandemic, a surprise benefit is a bit of me time including the hour-long walk to hospital each way.

Slashdot: Have you ever made contact with any of the other participants?

JR: Just a nod "hello" here and there. No one I've seen chats like me — ha. But also we are kept far apart because, you know, pandemic.

And Jennifer had a lot more to say about her experience, the rewards, the reactions, and the media coverage of it all...

"DNA is millions of times more efficient at storing data than your laptop's magnetic hard drive," reports Popular Mechanics.

"Since DNA can store data far more densely than silicon, you could squeeze all of the data in the world inside just a few grams of it." In a new paper published this week in the journal Proceedings of the National Academy of Sciences, Ilya Finkelstein, an associate professor of molecular biosciences at the University of Texas at Austin and company detail their new error correction method... They were able to store the entirety of The Wizard of Oz, translated into Esperanto, with more accuracy than prior DNA storage methods ever could have. We're on the yellow brick road toward the future of data storage.

Researchers at the University of Texas at Austin are certainly not the first to have encoded a work of art onto strands of DNA... [A] team of researchers from Microsoft and the University of Washington fit 200 megabytes of data onto lengths of DNA, including the entirety of War and Peace. In March 2019, they even came up with the first automated system for storing and retrieving data in the manufactured genetic material. Today, other major technology firms are also working in the space, including both IBM and Google. The ultra-secretive U.S. Intelligence Advanced Research Projects Activity — the government's version of DARPA, but for spies — is even invested in the work. These researchers envision a future where some of the most precious, but rarely accessed data, can be stored in vials of DNA, only pulled down from the cool, dark storage of the lab, as needed....

Because there are four building blocks in DNA, rather than the binary 1s and 0s in magnetic hard drives, the genetic storage method is far more dense, explains John Hawkins, another co-author of the new paper. "A teaspoon of DNA contains so much data it would require about 10 Walmart Supercenter-sized data centers to store using current technology," he tells Popular Mechanics. "Or, as some people like to put it, you could fit the entire internet in a shoe box." Not only that, but DNA is future-proof. Hawkins recalls when CDs were the dominant storage method, back in the 1990s, and they held the promise that their storage could last forever, because plastic does (but scratches can be devastating). Data stored on DNA, on the other hand, can last for hundreds of thousands of years. In fact, there is a whole field of science called archaeogenetics that explores the longevity of DNA to understand the ancient past... DNA storage doesn't require any energy, either — just a cool, dark place to hang out until someone decides to access it. But the greatest advantage, Hawkins says, is that our ability to read and write DNA will never become obsolete....

But like all data storage methods, DNA has a few shortcomings as well. The most significant upfront hurdle is cost. Hawkins says that current methods are similar to the cost for an Apple Hard Disk 20 back in 1980. Back then, about 20 megabytes of storage — or the amount of data you'd need to use to download a 15-minute video — went for about $1,500.