BLOGS

Significant Li plating capacity from Si anode. a, Li discharge profile in a battery of Li/graphite–Li_5.5PS_4.5Cl_1.5 (LPSCl1.5)–LGPS–LPSCl1.5–SiG at current density 0.2 mA cm^–2 at room temperature. Note that SiG was made by mixing Si and graphite in one composite layer. Inset shows the schematic illustration of stages 1–3 based on SEM and EDS mapping, which illustrate the unique Li–Si anode evolution in solid-state batteries observed experimentally in Figs. 1 and 2. b, FIB–SEM images of the SiG anode at different discharge states (i), (ii), and (iii) corresponding to points 1–3 in a, respectively. c, SEM–EDS mapping of (i), (ii), and (iii), corresponding to SEM images in b, where carbon signal (C) is derived from graphite, oxygen (O) and nitrogen (N) signals are from Li metal reaction with air and fluorine (F) is from the PTFE binder. d, Discharge profile of battery with cell construction Li-1M LiPF6 in EC/DMC–SiG. Schematics illustrate typical Si anode evolution in liquid-electrolyte batteries. e, FIB–SEM image (i) of SiG anode following discharge in the liquid-electrolyte battery shown in d; zoomed-in image (ii). Credit: Nature Materials (2024). DOI: 10.1038/s41563-023-01722-x

Topics: Applied Physics, Battery, Chemistry, Climate Change, Electrical Engineering, Mechanical Engineering

Researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed a new lithium metal battery that can be charged and discharged at least 6,000 times—more than any other pouch battery cell—and can be recharged in a matter of minutes.

The research not only describes a new way to make solid-state batteries with a lithium metal anode but also offers a new understanding of the materials used for these potentially revolutionary batteries.

The research is published in Nature Materials.

"Lithium metal anode batteries are considered the holy grail of batteries because they have ten times the capacity of commercial graphite anodes and could drastically increase the driving distance of electric vehicles," said Xin Li, Associate Professor of Materials Science at SEAS and senior author of the paper. "Our research is an important step toward more practical solid-state batteries for industrial and commercial applications."

One of the biggest challenges in the design of these batteries is the formation of dendrites on the surface of the anode. These structures grow like roots into the electrolyte and pierce the barrier separating the anode and cathode, causing the battery to short or even catch fire.

These dendrites form when lithium ions move from the cathode to the anode during charging, attaching to the surface of the anode in a process called plating. Plating on the anode creates an uneven, non-homogeneous surface, like plaque on teeth, and allows dendrites to take root. When discharged, that plaque-like coating needs to be stripped from the anode, and when plating is uneven, the stripping process can be slow and result in potholes that induce even more uneven plating in the next charge.

Solid-state battery design charges in minutes and lasts for thousands of cycles, Leah Burrows, Harvard John A. Paulson School of Engineering and Applied Sciences, Tech Xplore

Chromatic imaging of white light with a single lens (left) and achromatic imaging of white light with a hybrid lens (right). Credit: The Grainger College of Engineering at the University of Illinois Urbana-Champaign

Topics: 3D Printing, Additive Manufacturing, Applied Physics, Materials Science, Optics

Using 3D printing and porous silicon, researchers at the University of Illinois Urbana-Champaign have developed compact, visible wavelength achromats that are essential for miniaturized and lightweight optics. These high-performance hybrid micro-optics achieve high focusing efficiencies while minimizing volume and thickness. Further, these microlenses can be constructed into arrays to form larger area images for achromatic light-field images and displays.

This study was led by materials science and engineering professors Paul Braun and David Cahill, electrical and computer engineering professor Lynford Goddard, and former graduate student Corey Richards. The results of this research were published in Nature Communications.

"We developed a way to create structures exhibiting the functionalities of classical compound optics but in highly miniaturized thin film via non-traditional fabrication approaches," says Braun.

In many imaging applications, multiple wavelengths of light are present, e.g., white light. If a single lens is used to focus this light, different wavelengths focus at different points, resulting in a color-blurred image. To solve this problem, multiple lenses are stacked together to form an achromatic lens. "In white light imaging, if you use a single lens, you have considerable dispersion, and so each constituent color is focused at a different position. With an achromatic lens, however, all the colors focus at the same point," says Braun.

The challenge, however, is that the required stack of lens elements required to make an achromatic lens is relatively thick, which can make a classical achromatic lens unsuitable for newer, scaled-down technological platforms, such as ultracompact visible wavelength cameras, portable microscopes, and even wearable devices.

A new (micro) lens on optics: Researchers develop hybrid achromats with high focusing efficiencies,  Amber Rose, University of Illinois Grainger College of Engineering

In this image, optical pulses (solitons) can be seen circling through conjoined optical tracks. (Image: Yuan, Bowers, Vahala, et al.) An animated gif is at the original link below.

Topics: Applied Physics, Astronomy, Electrical Engineering, Materials Science, Nanoengineering, Optics

(Nanowerk News) When we last checked in with Caltech's Kerry Vahala three years ago, his lab had recently reported the development of a new optical device called a turnkey frequency microcomb that has applications in digital communications, precision timekeeping, spectroscopy, and even astronomy.

This device, fabricated on a silicon wafer, takes input laser light of one frequency and converts it into an evenly spaced set of many distinct frequencies that form a train of pulses whose length can be as short as 100 femtoseconds (quadrillionths of a second). (The comb in the name comes from the frequencies being spaced like the teeth of a hair comb.)

Now Vahala, Caltech's Ted and Ginger Jenkins, Professor of Information Science and Technology and Applied Physics and executive officer for applied physics and materials science, along with members of his research group and the group of John Bowers at UC Santa Barbara, have made a breakthrough in the way the short pulses form in an important new material called ultra-low-loss silicon nitride (ULL nitride), a compound formed of silicon and nitrogen. The silicon nitride is prepared to be extremely pure and deposited in a thin film.

In principle, short-pulse microcomb devices made from this material would require very low power to operate. Unfortunately, short light pulses (called solitons) cannot be properly generated in this material because of a property called dispersion, which causes light or other electromagnetic waves to travel at different speeds, depending on their frequency. ULL has what is known as normal dispersion, and this prevents waveguides made of ULL nitride from supporting the short pulses necessary for microcomb operation.

In a paper appearing in Nature Photonics ("Soliton pulse pairs at multiple colors in normal dispersion microresonators"), the researchers discuss their development of the new micro comb, which overcomes the inherent optical limitations of ULL nitride by generating pulses in pairs. This is a significant development because ULL nitride is created with the same technology used for manufacturing computer chips. This kind of manufacturing technique means that these microcombs could one day be integrated into a wide variety of handheld devices similar in form to smartphones.

The most distinctive feature of an ordinary microcomb is a small optical loop that looks a bit like a tiny racetrack. During operation, the solitons automatically form and circulate around it.

"However, when this loop is made of ULL nitride, the dispersion destabilizes the soliton pulses," says co-author Zhiquan Yuan (MS '21), a graduate student in applied physics.

Imagine the loop as a racetrack with cars. If some cars travel faster and some travel slower, then they will spread out as they circle the track instead of staying as a tight pack. Similarly, the normal dispersion of ULL means light pulses spread out in the microcomb waveguides, and the microcomb ceases to work.

The solution devised by the team was to create multiple racetracks, pairing them up so they look a bit like a figure eight. In the middle of that '8,' the two tracks run parallel to each other with only a tiny gap between them.

Conjoined 'racetracks' make new optical devices possible, Nanowerk.

Researchers are working to overcome challenges related to nanoscale optoelectronic interconnects, which use light to transmit signals around an integrated circuit. IMAGE: PROVIDED BY NCNST

Topics: Biology, Materials Science, Nanoengineering, Nanomaterials, Nanotechnology, Quantum Mechanics

The promise of nanotechnology, the engineering of machines and systems at the nanoscale, is anything but tiny. Over the past decade alone, there has been an explosion in research on how to design and build components that solve problems across almost every sector, and nanotechnology innovations have led to huge advancements in our quest to address humanity’s grand challenges, from healthcare to water to food security.

Like any area of scholarship, there are still so many unknowns. And yet, there are more talented scientists and engineers endeavoring to better comprehend and harness the power of nanotechnology than ever before. The future is bright for nanotechnology and its applications.

In celebration of its 20th anniversary, the National Center for Nanoscience and Technology, China (NCNST), a subsidiary of the prestigious Chinese Academy of Sciences, partnered with Science Custom Publishing to survey nanoscience experts from the journal and across the globe about the most knotty and fascinating questions that still need to be answered if we are to advance nanotechnology in society.

The Tiny Ten: Experts weigh in on the top 10 challenges remaining for nanoscience & nanotechnology, Science Magazine

Source: Brookings Institution

Topics: Civics, Civil Rights, Civilization, Democracy, Existentialism, Fascism

Cate Cox and Brittany Watts: Their last names rhyme, but their circumstances couldn't be more diametrically different from one another.

Cate Cox is a married suburban mother with two children. She previously lived in a suburb of Dallas, Texas, but due to her condition, she had to flee her state. A complication with her pregnancy put her life at risk and the possibility that she might not be able to conceive again if her pregnancy weren't ended expeditiously through a procedure now outlawed in Texas.

Brittany Watts, an African American woman, had a stillborn, unfortunately, in the toilet. The fetus was found in the drain, and she was charged with abuse.

Mrs. Cox eventually left Texas for the procedure, having the financial means to leave and get the healthcare that she desired.

Ms. Watts was a frightened young woman who had left the hospital twice before her miscarriage. Yet she's charged with felony abuse of a corpse in Ohio.

Abstract

The Effects of the Dobbs Decision on Fertility*

The U.S. Supreme Court decision in Dobbs v. Jackson Women’s Health Organization sparked the most profound transformation of the landscape of abortion access in 50 years. We provide the first estimates of the effects of this decision on fertility using a preregistered synthetic difference-in-differences design applied to newly released provisional natality data for the first half of 2023. The results indicate that states with abortion bans experienced an average increase in births of 2.3 percent relative to states where abortion was not restricted.

Source: The Effects of the Dobbs Decision on Fertility, IZA Institute of Labor Economics

The Dobbs Decision was a strategic salvo shot at the year 2045:

New census population projections confirm the importance of racial minorities as the primary demographic engine of the nation’s future growth, countering an aging, slow-growing, and soon-to-be-declining white population. The new statistics project that the nation will become “minority white” in 2045. During that year, whites will comprise 49.7 percent of the population in contrast to 24.6 percent for Hispanics, 13.1 percent for blacks, 7.9 percent for Asians, and 3.8 percent for multiracial populations (see Figure 1).

The shift is the result of two trends. First, between 2018 and 2060, gains will continue in the combined racial minority populations, growing by 74 percent. Second, during this time frame, the aging white population will see a modest immediate gain through 2024 and then experience a long-term decline through 2060, a consequence of more deaths than births (see Figure 2)

Source: Brookings Institution

24.6 (Hispanics) + 13.1 (African Americans) + 7.9 (Asians) + 3.8 (Multiracial) + 0.9 (Other) = 50.3%, which is apparently an existential crisis on the right because "white" supremacy is anxiously numerical.

Excerpt from "Black Labor, White Wealth: The Search for Power and Economic Justice," (August 1, 1994) Claude Anderson, Ed. D., Chapter 2: Power and Black Progress:

Chapter 2, page 33, subsection titled:

Numerical Population Power

     In a democratic society, the numerical majority wins, rules, and decides. The theoretical rights of a minority may or may not be respected, especially if they are a planned minority. Numerical population power is the power that comes to those groups that acquire power through their sheer size. The black population peaked in the 1750s when slaves and free blacks accounted for approximately 33 percent of the total population. The high numerical strength of blacks caused fear and concern among whites. They feared the loss of their own numerical power. Word of black Haitians' successful slave revolt in the 1790s had spread across America and reportedly ignited several slave revolts in Southern states.

     The First U.S. Congress enacted the first naturalization law that declared America to be a nation for "whites only." The Naturalization Act and other income incentives attracted a mass influx of legal and illegal European ethnicities, followed by Asian and Hispanic immigrants a century later. The immigration quota for blacks remained zero until their total percentage of the population declined to nine percent. By making blacks a planned numerical minority, white society assured its dominance in a democratic society where the majority always wins. Source: Sample chapter

Hence, a national ban is actually what they want. Fifteen weeks will be sold as a "reasonable" compromise, and then it will be paired down to the goose egg that is the actual target. Hence, the hostility towards mixed-race couples and multiracial children from their union: they're not on the "white" team. Hence, the hostility towards the LGBTQ community and whether or not they conceive by surrogate or artificial insemination, their union does not produce enough "white" babies to maintain a numerical majority for the "white" team. Mrs. Cox and upper-middle-class suburban women like her will always have the means and the money to flee any complications and save future childbearing years. Ms. Watt will have one of two options: either flush her undesired fetus while in a state of shock down a toilet or die from complications that she cannot afford to mitigate.

The American Eugenics Movement, unfortunately, had a boost from prominent scientists who wished to rid the world of the "feebleminded" and the unfit. They did this through forced sterilization and control over who could get married (to procreate in the first place). If you've ever used the terms "well-bred" or "good breeding," those originate from eugenics, now accepted as a pseudoscience, once promoted by one of the founders of the transistor and Nobel laureate in Physics, William Schockley. Coupled with southern Jim Crow, eugenics-on-steroids in the hands of the Nazis led to the Holocaust.

Nazi authorities created the Lebensborn program to increase Germany’s population. Pregnant German women deemed “racially valuable” were encouraged to give birth to their children at Lebensborn homes. During World War II, the program became complicit in the kidnapping of foreign children with physical features considered “Aryan” by the Nazis.

Source: Lebensborn Program/U.S. Holocaust Memorial Museum

More Than 700,000 Ukrainian Children Taken To Russia Since Full-Scale War Started, Official Says, Radio Free Europe, Radio Liberty

Dramatic Population Drop in Russia, as War, COVID and Emigration Exacerbate Declining Births, Health Policy Watch

 The First U.S. Congress enacted the first naturalization law that declared America to be a nation for "whites only." The Naturalization Act and other income incentives attracted a mass influx of legal and illegal European ethnicities, followed by Asian and Hispanic immigrants a century later. The immigration quota for blacks remained zero until their total percentage of the population declined to nine percent. By making blacks a planned numerical minority, white society assured its dominance in a democratic society where the majority always wins. Source: Sample chapter

If one is desperate to maintain a majority or "goose your numbers," you might be capable of anything to achieve those ends.

Very soon in the founding of a new nation, however, White Christians began to establish their well-being by using the resources, bodies, and lives of others. Through their own "witchcraft," European Christians employed a mysterious and threatening potency that was the practice of using the other for their own gain. In [James W.] Perkinson's description, through the projects of the modern Christian empire, "a witchery" of heretofore unimaginable potency ravaged African and aboriginal cultures...For Perkinson, the witchcraft of White supremacy was conjured through racial discourse as an ideological and practical frame that he identifies as the 'quintessential witchery of modernity.'... In Perkinson's chilling words, "Whiteness, under the veneer of its 'heavenly' pallor, is a great grinding witch tooth, sucking blood and tearing flesh without apology."

Excerpts: The Sin of White Supremacy: Christianity, Racism & Religious Diversity in America," by Jeanine Hill Fletcher, CH 2: The Witchcraft of White Supremacy, 47, 48.

Asimov image: https://karsh.org/isaac-asimov/

Sagan image: https://www.imdb.com/name/nm0755981/

Topics: Civics, Civil Rights, Civilization, Climate Change, Democracy, Existentialism

Note: The Nobel Prize will be awarded starting Monday in Physiology, then Physics (my admitted favorite), Chemistry, Literature, Peace, and Economics the following Monday. Thus, the concentration of the postings will be Nobel as they post. I will be “nerding out.”

“There is a cult of ignorance in the United States, and there has always been. The strain of anti-intellectualism has been a constant thread winding [its way] through our political and cultural life, nurtured by the false notion that democracy means that ‘my ignorance is just as good as your knowledge.”

Isaac Asimov

This is an often-used quote for memes from a longer essay by Isaac Asimov, who was at the time a professor of biochemistry at Boston University and the author of 212 books of science and science fiction (an interesting “side hustle”). I provided the link above and below, highlighted with his name. Dr. Asimov had much to say about the state of affairs as he saw it during my freshman year at North Carolina A&T State University in 1980. It was also the year the New York Times reported more black males in college than in the prison industrial complex. It was an election year and the year for the inaugural of 24-hour news media in Ted Turner’s Cable News Network (CNN), which birthed copycats Fox and MSNBC in 1996. It’s hard to imagine that before Ted’s innovation, television wasn’t a profit-making enterprise as much as a public service. Pundits didn’t wear their party affiliations on their sleeves or give “opinions” on the “news.” Mostly, they did not lie to their audiences to goose ratings either.

Asimov’s poignant observation of the phrase “Don’t trust anyone over 30” had to morph to “Don’t trust the experts” since Neverland never existed. The Second Law of Thermodynamics (the “arrow of time”) does, and did, meaning that those who gave that warning eventually would be untrustworthy after the “big 3-0.” Therefore, “Don’t trust the experts” became the foundation for railing against elites, which means anyone who goes to a library, pursues an education up to a terminal degree, or reads a book.

Experts created the Internet. Experts like “Hidden Figures” Mary Jackson, Katherine Johnson, and Dorothy Vaughan enabled the United States to get to the Moon (there would be no “SpaceX” without them). Experts like Dr. Kizzmekia Corbett were one of many who helped to create the mRNA technology for the vaccines used to fight the COVID-19 pandemic.

But “Don’t trust the experts,” a vapid slogan or talking point if there ever was one.

Sloganeering in the Cambridge Dictionary has a succinct and to-the-point definition: “trying to persuade people by repeating phrases instead of explaining your ideas.” It means the absence of an argument. Thus, there is a deliberate absence and avoidance of thinking or outlining to formulate a cogent framework, relying on volume and repetition so that others will begin following your “lead” from the sheer exhaustion of gaslighting.

*****

“I have a foreboding of an America in my children’s or grandchildren’s time -- when the United States is a service and information economy; when nearly all the manufacturing industries have slipped away to other countries; when awesome technological powers are in the hands of a very few, and no one representing the public interest can even grasp the issues; when the people have lost the ability to set their own agendas or knowledgeably question those in authority; when, clutching our crystals and nervously consulting our horoscopes, our critical faculties in decline, unable to distinguish between what feels good and what’s true, we slide, almost without noticing, back into superstition and darkness…

The dumbing down of Americans is most evident in the slow decay of substantive content in the enormously influential media, the 30-second sound bites (now down to 10 seconds or less), lowest common denominator programming, credulous presentations on pseudoscience and superstition, but especially a kind of celebration of ignorance.”
― Carl Sagan, The Demon-Haunted World: Science as a Candle in the Dark

*****

Dr. Sagan published these words in 1995. Both authors’ works are still available years after their deaths.

Celebrating ignorance invariably leads to a cult of ignorance.

It is a cult of ignorance when expertise is assailed as bullying.

It is a cult of ignorance when your side can’t admit to losing the Civil War or a presidential election.

It is a cult of ignorance when Dr. Fauci, Senator Romney, the FBI, the CDC, elected officials, and VOLUNTEER election workers must shell out dollars to protect their families from raving lunatics who believe every conspiracy tall tale printed, uttered, tweeted, or truth-ed.

Source material: Cult of Ignorance

Climate scientists are experts, yet they cannot be believed if the stupefying mantra is to be obeyed. The war against experts has always baffled me. No couple during Braxton Hicks contractions wants an Appalachian folk medicine doctor like Granny from the “Beverly Hillbillies” applying moonshine and a hacksaw or Norm, the mailman from the sitcom “Cheers” to start spitballing and wing it through the full delivery.

But, “it’s the weather,” following the “Don’t trust the experts” mantra, despite new Hurricane Katrinas repeated since 2005 across the globe, fire seasons in California and Canada, and women never having complications from ectopic pregnancies, high blood pressure, depression, stillbirths that need intervention by what is now illegal in most neo-confederate states (“conservative” they are not) because of the “sanctity of life” until the children are old enough to be lead-sprayed by psychopaths. Because in terms of climate, some wish to induce the apocalypse, and because in terms of bodily autonomy, the stork brings all babies alive and well as requested to cisgender parents, and no “others.”

*****

I contend that the slogan “America’s right to know” is [a] meaningless one when we have an ignorant population and that the function of a free press is virtually zero when hardly anyone can read.

What shall we do about it?

We might begin by asking ourselves whether ignorance is so wonderful after all and whether it makes sense to denounce “elitism.”

I believe that every human being with a physically normal brain can learn a great deal and be surprisingly intellectual. I believe that what we badly need is [a] social approval of learning and social rewards for learning.

We can all be members of the intellectual elite, and then, will a phrase like “America’s right to know” and, indeed, any true concept of democracy have any meaning.

Isaac Asimov

In time for Halloween Halloween Party '23 which includes my occult detective short story "The War Memorial Affair" on sale now at  devilspartypress.com

Image source: Link below

Topics: Applied Physics, Astrophysics, Computer Modeling, Einstein, High Energy Physics, Particle Physics, Theoretical Physics

In the search for new physics, a new kind of scientist is bridging the gap between theory and experiment.

Traditionally, many physicists have divided themselves into two tussling camps: the theorists and the experimentalists. Albert Einstein theorized general relativity, and Arthur Eddington observed it in action as “bending” starlight; Murray Gell-Mann and George Zweig thought up the idea of quarks, and Henry Kendall, Richard Taylor, Jerome Freidman and their teams detected them.

In particle physics especially, the divide is stark. Consider the Higgs boson, proposed in 1964 and discovered in 2012. Since then, physicists have sought to scrutinize its properties, but theorists and experimentalists don’t share Higgs data directly, and they’ve spent years arguing over what to share and how to format it. (There’s now some consensus, although the going was rough.)

But there’s a missing player in this dichotomy. Who, exactly, is facilitating the flow of data between theory and experiment?

Traditionally, the experimentalists filled this role, running the machines and looking at the data — but in high-energy physics and many other subfields, there’s too much data for this to be feasible. Researchers can’t just eyeball a few events in the accelerator and come to conclusions; at the Large Hadron Collider, for instance, about a billion particle collisions happen per second, which sensors detect, process, and store in vast computing systems. And it’s not just quantity. All this data is outrageously complex, made more so by simulation.

In other words, these experiments produce more data than anyone could possibly analyze with traditional tools. And those tools are imperfect anyway, requiring researchers to boil down many complex events into just a handful of attributes — say, the number of photons at a given energy. A lot of science gets left out.

In response to this conundrum, a growing movement in high-energy physics and other subfields, like nuclear physics and astrophysics, seeks to analyze data in its full complexity — to let the data speak for itself. Experts in this area are using cutting-edge data science tools to decide which data to keep and which to discard and to sniff out subtle patterns.

Opinion: The Rise of the Data Physicist, Benjamin Nachman, APS News

Topics: Chemistry, Computer Science, Quantum Computer, Quantum Mechanics

Scientists at the University of Sydney have, for the first time, used a quantum computer to engineer and directly observe a process critical in chemical reactions by slowing it down by a factor of 100 billion times.

Joint lead researcher and Ph.D. student Vanessa Olaya Agudelo said, "It is by understanding these basic processes inside and between molecules that we can open up a new world of possibilities in materials science, drug design, or solar energy harvesting.

"It could also help improve other processes that rely on molecules interacting with light, such as how smog is created or how the ozone layer is damaged."

Specifically, the research team witnessed the interference pattern of a single atom caused by a common geometric structure in chemistry called a "conical intersection."

Conical intersections are known throughout chemistry and are vital to rapid photochemical processes such as light harvesting in human vision or photosynthesis.

Chemists have tried to directly observe such geometric processes in chemical dynamics since the 1950s, but it is not feasible to observe them directly, given the extremely rapid timescales involved.

To get around this problem, quantum researchers in the School of Physics and the School of Chemistry created an experiment using a trapped-ion quantum computer in a completely new way. This allowed them to design and map this very complicated problem onto a relatively small quantum device—and then slow the process down by a factor of 100 billion. Their research findings are published August 28 in Nature Chemistry.

"In nature, the whole process is over within femtoseconds," said Olaya Agudelo from the School of Chemistry. "That's a billionth of a millionth—or one quadrillionth—of a second.

"Using our quantum computer, we built a system that allowed us to slow down the chemical dynamics from femtoseconds to milliseconds. This allowed us to make meaningful observations and measurements.

"This has never been done before."

Joint lead author Dr. Christophe Valahu from the School of Physics said, "Until now, we have been unable to directly observe the dynamics of 'geometric phase'; it happens too fast to probe experimentally.

"Using quantum technologies, we have addressed this problem."

Scientists use a quantum device to slow down simulated chemical reactions 100 billion times. University of Sydney, Phys.org.

The sea floor near Australia’s Casey station in Antarctica has been found to have levels of pollution comparable to those in Rio de Janeiro’s harbor. Credit: Torsten Blackwood/AFP via Getty

Topics: Antarctica, Biology, Chemistry, Environment, Physics, Research

Antarctica is often described as one of the most pristine places in the world, but it has a dirty secret. Parts of the sea floor near Australia’s Casey research station are as polluted as the harbor in Rio de Janeiro, Brazil, according to a study published in PLoS ONE in August.

The contamination is likely to be widespread across Antarctica’s older research stations, says study co-author Jonathan Stark, a marine ecologist at the Australian Antarctic Division in Hobart. “These contaminants accumulate over long time frames and don’t just go away,” he says.

Stark and his colleagues found high concentrations of hydrocarbons — compounds found in fuels — and heavy metals, such as lead, copper, and zinc. Many of the samples were also loaded with polychlorinated biphenyls, highly carcinogenic chemical compounds that were common before their international ban in 2001.

When the researchers compared some of the samples with data from the World Harbor Project — an international collaboration that tracks large urban waterways — they found that lead, copper, and zinc levels in some cases were similar to those seen in parts of Sydney Harbour and Rio de Janeiro over the past two decades.

Widespread pollution

The problem of pollution is not unique to Casey station, says Ceisha Poirot, manager of policy, environment, and safety at Antarctica New Zealand in Christchurch. “All national programs are dealing with this issue,” she says. At New Zealand’s Scott Base — which is being redeveloped — contamination left from past fuel spills and poor waste management has been detected in soil and marine sediments. More of this historical pollution will emerge as the climate warms, says Poirot. “Things that were once frozen in the soil are now becoming more mobile,” she says.

Most of Antarctica’s contamination is due to historically poor waste management. In the old days, waste was often just dumped a small distance from research stations, says Terence Palmer, a marine scientist at Texas A&M University–Corpus Christi.

Research stations started to get serious about cleaning up their act in 1991. In that year, an international agreement known as the Protocol on Environmental Protection to the Antarctic Treaty, or the Madrid Protocol, was adopted. This designated Antarctica as a “natural reserve, devoted to peace and science,” and directed nations to monitor environmental impacts related to their activities. But much of the damage had already been done — roughly two-thirds of Antarctic research stations were built before 1991.

Antarctic research stations have polluted a pristine wilderness, Gemma Conroy, Nature.

Lurking for decades: researchers have discovered Pines' demon, a collection of electrons in a metal that behaves like a massless wave. It is illustrated here as an artist’s impression. (Courtesy: The Grainger College of Engineering/University of Illinois Urbana-Champaign)

Topics: Particle Physics, Quantum Mechanics, Research, Solid-State Physics, Theoretical Physics

For nearly seven decades, a plasmon known as Pines’ demon has remained a purely hypothetical feature of solid-state systems. Massless, neutral, and unable to interact with light, this unusual quasiparticle is reckoned to play a key role in certain superconductors and semimetals. Now, scientists in the US and Japan say they have finally detected it while using specialized electron spectroscopy to study the material strontium ruthenate.

Plasmons were proposed by the physicists David Pines and David Bohm in 1952 as quanta of collective electron density fluctuations in a plasma. They are analogous to phonons, which are quanta of sound, but unlike phonons, their frequency does not tend to zero when they have no momentum. That’s because finite energy is needed to overcome the Coulomb attraction between electrons and ions in a plasma in order to get oscillations going, which entails a finite oscillation frequency (at zero momentum).

Today, plasmons are routinely studied in metals and semiconductors, which have conduction electrons that behave like a plasma. Plasmons, phonons, and other quantized fluctuations are called quasiparticles because they share properties with fundamental particles such as photons.

In 1956, Pines hypothesized the existence of a plasmon which, like sound, would require no initial burst of energy. He dubbed the new quasiparticle a demon in honor of James Clerk Maxwell’s famous thermodynamic demon. Pines’ demon forms when electrons in different bands of metal move out of phase with one another such that they keep the overall charge static. In effect, a demon is the collective motion of neutral quasiparticles whose charge is screened by electrons from another band.

Demon quasiparticle is detected 67 years after it was first proposed. Edwin Cartlidg, Physics World.

Topics: Civics, Civil Rights, Civilization, Democracy, Existentialism, Fascism

This essay is derived from a creative work of the same title, posted on my poetry blog Monday.

Happy birthday, mom. I miss you.

Sixty years ago, you were thirty-eight years old. I was one year, one month, and one day old. I was apparently potty-trained, which I didn't know until my big sister told me after I bragged that my granddaughter, your great-granddaughter, was potty-trained at two.

"We had cloth diapers back then. No one was playing with you, Reggie."

I took this to mean the task of changing cloth diapers, flushing the load, and WASHING them was probably unpleasant. It also subtly suggests that disposable diapers stifle our development.

Twenty-two years ago this past Monday, a Saudi Sheik, Osama Bin Ladin, trained by the CIA when he was in the Mujahadeen, fighting a proxy war with Russia in Afghanistan, convinced 19 hijackers, 15 from his nation, to plunge top-filled planes into the Twin Towers, the Pentagon: Flight 93 was supposed to hit the Capitol, except for the passengers who decided to intervene, "let's roll." 3,000+ people died. The nation was terrorized.

On your birthday, four little black girls were murdered for the crime of singing in a choir, or, correction, PRACTICING to sing in a choir for a performance. It happened on your thirty-eighth birthday. It was a Sunday.

Monday, you and Pop had to go to work like it was "normal." Violence has been normal for African Americans since the 13th Amendment ended enslavement (EXCEPT as a punishment for a crime: "wiggle room" that has been abused), the 14th gave us birthright citizenship, and the 15th gave at least our men, the right to vote. That was immediately thwarted in the aftermath of the antebellum South by naming the number of coins/marbles/soap bubbles in a bottle, poll taxes, tests to recite The Constitution (when civics knowledge for the average citizen - then, and now - would likely fail miserably).

You both had to drop me off at the sitter and hope to see me alive again and pretend, like every black person at the time, that this was "normal."

"Two medical professionals, Dr. Elizabeth H. Blackburn and Dr. Carol W. Greider,
Shared the Nobel Prize in Physiology and Medicine with Dr. Jack W. Szostak in 2009 "for the discovery of how chromosomes are protected by telomeres and the enzyme telomerase."

"The long, thread-like DNA molecules that carry our genes are packed into chromosomes, the telomeres being the caps on their ends. Elizabeth Blackburn and Jack Szostak discovered that a unique DNA sequence in the telomeres protects the chromosomes from degradation. Carol Greider and Elizabeth Blackburn identified telomerase, the enzyme that makes telomere DNA. These discoveries explained how the ends of the chromosomes are protected by the telomeres and that they are built by telomerase.

"If the telomeres are shortened, cells age. Conversely, if telomerase activity is high, telomere length is maintained, and cellular senescence is delayed."

Source: http://www.nobelprize.org/nobel_prizes/medicine/laureates/2009/

Telomeres are shorter for African Americans, a byproduct of 400 years of racial terrorism.

We were, and are, terrorized for being human, for wanting what's in The Constitution, for exercising our birthright citizenship. They want to take that away, too., for undocumented immigrants, then probably selective brown people who won't vote for them. The Growth and Opportunity Project said they should reach out to African Americans, Asian Americans, Hispanic/Latino Americans, the LGBT, Women, and Youth to expand the party. They instead engage in "culture wars" that are silly, like fighting the banning of gas stoves (there isn't one), the replacement of incandescent lights with more climate-friendly fluorescent or LED lights, and somehow, it's outrageous to suggest limiting beer consumption (no one did).

I'm tired, momma.

September 11, 2001, Pop had been dead for two years. The boys were in fourth grade and college. They had questions. I had no answers, and I wanted to talk to Pop, but I couldn't. Now I can't talk to you.

As Americans finally experienced, on September 11, 2001, the psychological effects of the horrific fear of not knowing what calamity would end your existence.

Living in fear of being killed for the "sin" of being alive shortens your telomeres.

As my big sister observed:
This country needs more cloth diapers for our development.

Happy Heavenly birthday, momma. I miss you. Love, "Stink."

Taken at Bethlehem Community Center by the author, spring 2023

© August 30, 2023, the Griot Poet

“Too few public pools

“There are more than 10 million private swimming pools in the United States, according to a C.D.C. estimate, compared with just 309,000 public ones. That figure includes pools that belong to condo complexes, hotels, and schools, so the number of pools truly accessible to the public is even smaller. The biggest reason so many Americans can’t swim is that they have too few places to learn to do so.

“Then the expansion stopped. In the 1960s, many towns across the South **filled or destroyed their public pools** rather than allow Black Americans to swim in them. Northern cities, strapped for resources amid suburbanization and white flight, struggled to maintain their pools. This is how public investment in pools withered, one more ghastly sacrifice America has laid at the altar of anti-Black racism and twisted fears about miscegenation.”

Mara Gay, New York Times

Source: https://www.nytimes.com/2023/07/27/opinion/drowning-public-pools-america.html

I came to Earth via Kate Bitting Hospital,

Now, Reynolds Clinic,

On what used to be Seventh and Cleveland, now Cleveland and Martin Luther King Avenue.

The segregated hospital was named after the wife of RJ Reynolds, the tobacco magnate,

One of 12 hospitals for African Americans,

It’s where my mother worked as a nurse,

It, and all the others, no longer exists.

I attended Bethlehem Community Center for preschool and kindergarten.

It was, and is, right up the street from the hospital,

It was, and is, predominantly minority, with some immigrants,

We once had a pool where I learned to swim, to my big sister’s chagrin (she found out abruptly after I dove into the deep end of a then-segregated pool).

That pool is now closed.

On a recent visit to Bethlehem earlier this year, I saw the site where the pool once was now a surface cemented over.

My old neighborhood is still De Facto segregated.

I being a rare exception, some have been trapped in “The Racist Matrix” for generations.

A ghetto was brought over from Germany to the US.

After Germany put on steroids, American eugenics.

A place exquisitely designed to sequester possibilities and shatter dreams.

Black children are more likely to die from drowning,

Because if they HAD any pools in their neighborhoods, they’re cemented over.

If you’re lucky, someone’s dad (like mine) erects one of those plastic above-ground, temporary pools and invites your friends to come over, play, and cool off in it.

Occam’s razor:

Pair ceiled public pools with climate change,

The fear of water in black children,

The fear of miscegenation with white women,

Society has designed a slow crucifixion.

We’re barreling towards 3 degrees Celsius,

And the need for humans to keep cool in an ever-warming environment.

Who wins?

Which group has a survival advantage: 10 million private pools or 309,000 public ones?

Which groups are disadvantaged?

Are pools and universal healthcare inalienable human rights?

Or is this some National Security Study Memorandum 200/Thomas Malthus Eugenics strategy?

Or is their plan to keep a numeric majority to cook us before heaven or hellish eternities?

Who knows?

I just know that my granddaughter can swim because her parents can afford her lessons at a swim club [for] it.

It used to be that learning to swim didn’t require a middle-class wallet.

I just know that I attended,

Bethlehem Community Center from pre-k to kindergarten,

I learned how to read, how to swim, and how to grieve our loss of Dr. Martin Luther King,

As rifle shots rang out [and] confederate flags in the parking lot passed by our windows.

They were thrilled. We were devastated.

The same flag of insurrection was carried by their grandchildren at the US Capitol on January 6th.

The city of Winston-Salem left a cement surface like it was a marker to a tomb.

Even pre-k, to kindergarten:

Even there, in that innocence,

They couldn’t leave us alone...to swim.

Artist's conception of the dwarf planet Sedna in the outer edges of the known solar system. (Image credit: NASA/JPL-Caltech/R. Hurt (SSC))

Topics: Astronomy, Astrophysics, Exoplanets, NASA, Space Exploration

Astronomers are racing to explain the peculiar orbits of faraway objects at the edge of our solar system.

Among the many mysteries that make the furthest reaches of our solar system, well, mysterious, is the exceptionally egg-shaped path of a dwarf planet called 90377 Sedna.

Its 11,400-year orbit, one of the longest of any resident of the solar system, ushers the dwarf planet to seven billion miles (11.3 billion km) from the sun, then escorts it out of the solar system and way past the Kuiper Belt to 87 billion miles (140 billion km), and finally takes it within a loose shell of icy objects known as the Oort cloud. Since Sedna's discovery in 2003, astronomers have struggled to explain how such a world could have formed in a seemingly empty region of space, where it is too far to be influenced by giant planets of the solar system and even the Milky Way galaxy itself.

Now, a new study suggests that a thus far undetected Earth-like planet hovering in that region could be deviating orbits of Sedna and a handful of similar trans-Neptunian objects (TNOs), which are the countless icy bodies orbiting the sun at gigantic distances. Many TNOs have oddly inclined and egg-shaped orbits, possibly due to being tugged at by a hidden planet, astronomers say.

Could an 'Earth-like' planet be hiding in our solar system's outer reaches? Sharmila Kuthunur, Space.com

Day Seven of SWORD and SOUL 2023!

AYELE NUBIAN WARRIOR™ Backpack

Carry your stuff, express yourself, keep your hands free, it's win-win-win

Bag measures 17” x 12.5” x 5” / 43 x 31 x 12 cm

Most standard laptops fit in the internal laptop pocket, which measures 13.5" x 10.5" / 34 x 27 cm

Durable 100% polyester shell

Vivid all-over design, sublimation printed for you when you order

External mesh pocket and adjustable padded straps

Follow the Link:
HERE!

Lawful Evil #3, Along Came a Spider, is now available

The action is heating up! Dark Spider and Suc-U-Babe are left reeling from their explosive encounter with the Concordance and caught in the web of a much deadlier threat than the ones they just escaped.

Grab your copy here: Lawful Evil # 3, Along Came a Spider

Life on other planets might not look like any beings we’re used to on Earth. It may even be unrecognizable at first to scientists searching for it. Credit: William Hand

Topics: Astrobiology, Astronomy, Astrophysics, Planetary Science, SETI, Space Exploration

Sarah Stewart Johnson was a college sophomore when she first stood atop Hawaii’s Mauna Kea volcano. Its dried lava surface differed from the eroded, tree-draped mountains of her home state of Kentucky. Johnson wandered away from the other young researchers she was with and toward a distant ridge of the 13,800-foot summit. Looking down, she turned over a rock with the toe of her boot. To her surprise, a tiny fern lived underneath it, sprouting from ash and cinder cones. “It felt like it stood for all of us, huddled under that rock, existing against the odds,” Johnson says.

Her true epiphany, though, wasn’t about the hardiness of life on Earth or the hardships of being human: It was about aliens. Even if a landscape seemed strange and harsh from a human perspective, other kinds of life might find it quite comfortable. The thought opened up the cosmic real estate and the variety of life she imagined might be beyond Earth’s atmosphere. “It was on that trip that the idea of looking for life in the universe began to make sense to me,” Johnson says.

Later, Johnson became a professional at looking. As an astronomy postdoc at Harvard University in the late 2000s and early 2010s, she investigated how astronomers might use genetic sequencing—detecting and identifying DNA and RNA—to find evidence of aliens. Johnson found the work exciting (the future alien genome project!), but it also made her wonder: What if extraterrestrial life didn’t have DNA, RNA, or other nucleic acids? What if their cells got instructions in some other biochemical way?

As an outlet for heretical thoughts like this, Johnson started writing in style too lyrical and philosophical for scientific journals. Her typed musings would later turn into the 2020 popular science book The Sirens of Mars. Inside its pages, she probed the idea that other planets were truly other. So their inhabitants might be very different, at a fundamental and chemical level, from anything in this world. “Even places that seem familiar—like Mars, a place that we think we know intimately—can completely throw us for a loop,” she says. “What if that’s the life case?”

The Search for Extraterrestrial Life as We Don’t Know It, Sarah Scoles, Scientific American

A vertical shock tube at Los Alamos National Laboratory is used for turbulence studies. Sulfur hexafluoride is injected at the top of the 5.3-meter tube and allowed to mix with air. The waste is ejected into the environment through the blue hose at the tube tower’s lower left; in the fiscal year 2021, such emissions made up some 16% of the lab’s total greenhouse gas emissions. The inset shows a snapshot of the mixing after a shock has crossed the gas interface; the darker gas is SF₆, and the lighter is air. The intensities yield density values.

Topics: Civilization, Climate Change, Global Warming, Research

Reducing air travel, improving energy efficiency in infrastructure, and installing solar panels are among the obvious actions that individual researchers and their institutions can implement to reduce their carbon footprint. But they can take many other small and large steps, too, from reducing the use of single-use plastics and other consumables and turning off unused instruments to exploiting waste heat and siting computing facilities powered by renewable energy. On a systemic level, measures can encourage behaviors to reduce carbon emissions; for example, valuing in-person invited job talks and remote ones equally could lead to less air travel by scientists.

So far, the steps that scientists are taking to reduce their carbon footprint are largely grassroots, notes Hannah Johnson, a technician in the imaging group at the Princess Máxima Center for Pediatric Oncology in Utrecht and a member of Green Labs Netherlands, a volunteer organization that promotes sustainable science practices. The same goes for the time and effort they put in for the cause. One of the challenges, she says, is to get top-down support from institutions, funding agencies, and other national and international scientific bodies.

At some point, governments are likely to make laws that support climate sustainability, says Astrid Eichhorn, a professor at the University of Southern Denmark whose research is in quantum gravity and who is active on the European Federation of Academies of Sciences and Humanities committee for climate sustainability. “We are in a situation to be proactive and change in ways that do not compromise the quality of our research or our collaborations,” she says. “We should take that opportunity now and not wait for external regulations.”

Suppose humanity manages to limit emissions worldwide to 300 gigatons of carbon dioxide equivalent (CO₂e). In that case, there is an 83% chance of not exceeding the 1.5 °C temperature rise above preindustrial levels set in the 2015 Paris Agreement, according to a 2021 Intergovernmental Panel on Climate Change special report. That emissions cap translates to a budget of 1.2 tons of CO₂e per person annually through 2050. Estimates for the average emissions by researchers across scientific fields are much higher and range widely in part because of differing and incomplete accounting approaches, says Eichhorn. She cites values from 7 to 18 tons a year for European scientists.

Scientists take steps in the lab toward climate sustainability, Toni Feder, Physics Today.

Credit: michaelmjc/Getty Images (chalkboard); Scientific American (words and design)

Topics: Biofuels, Civilization, Climate Change, Existentialism

Climate change is already disrupting the lives of billions of people. What was once considered a problem for the future is raging all around us right now. This reality has helped convince a majority of the public that we must act to limit suffering. In an August 2022 survey by the Pew Research Center, 71 percent of Americans said they had experienced at least one heat wave, flood, drought, or wildfire in the past year. Among those people, more than 80 percent said climate change had contributed. In another 2022 poll, 77 percent of Americans who said they had been affected by extreme weather in the past five years saw climate change as a major crisis.

Yet the response is not meeting the urgency of the crisis. A transition to clean energy is underway, but it is happening too slowly to avoid the worst effects of climate change. The U.S. government finally took long-delayed action by passing the Inflation Reduction Act in August 2022, much more progress is needed, and entrenched politics hamper it. The partisan divide largely stems from conservatives’ perception that climate change solutions will involve big government controlling people’s choices and imposing sacrifices. Research shows that Republicans’ skepticism about climate change is largely attributable to a conflict between ideological values and often-discussed solutions, particularly government regulations. A 2019 study on Climatic Change found that political and ideological polarization on climate change is particularly acute in the U.S. and other English-speaking countries.

One thing we can all do to ease this gridlock is to alter the language and messages we use about climate change. The words we use and the stories we tell matter. Transforming the way we talk about climate change can engage people and build the political will needed to implement policies strong enough to confront the crisis with the urgency required.

To inspire people, we need to tell a story not of sacrifice and deprivation but of opportunity and improvement in our lives, health, and well-being—a story of humans flourishing in a post-fossil-fuel age.

The Right Words Are Crucial to Solving Climate Change, Susan Joy Hassol, Scientific American