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Sixth-century Byzantium was a city divided by race hatred so intense that people viciously attacked each other, not only in the streets but also in churches. The inscription on an ancient tablet conveys the raw animus that spawned from color differences: “Bind them! … Destroy them! … Kill them!” The historian Procopius, who witnessed this race antagonism firsthand, called it a “disease of the soul,” and marveled at its irrational intensity:

They fight against their opponents knowing not for what end they imperil themselves … So there grows up in them against their fellow men a hostility which has no cause, and at no time does it cease or disappear, for it gives place, neither to the ties of marriage nor of relationship nor of friendship.1

This hostility sparked multiple violent clashes and riots, culminating in the Nika Riot of 532 CE, the biggest race riot of all time: 30,000 people perished, and the greatest city of antiquity was reduced to smoldering ruins.

But the Nika Riot wasn’t the sort of race riot you might imagine. The race in question was the chariot race. The color division wasn’t between black and white but between blue and green—the colors of the two main chariot-racing teams. The teams’ supporters, who were referred to as the Blue and Green “factions,” proudly wore their team colors, not just in the hippodrome but also around town. To help distinguish themselves, many Blues also sported distinctive mullet hairstyles, like those of 1970’s rock stars. Both Blues and Greens were fiercely loyal to their factions and their colors. The chariots and drivers were a secondary concern; the historian Pliny asserted that if the drivers were to swap colors in the middle of a race, the factions would immediately switch their allegiances accordingly.

The race faction rivalry had existed for a long time before the Nika Riot, yet Procopius writes that it had only become bitter and violent in “comparatively recent times.” So, what caused this trivial division over horse-racing teams to turn so deadly? In short, it was the Byzantine version of “identity politics.”

Modern sociological research helps explain the phenomenon. Decades of studies have demonstrated the dangerous power of the human tribal instinct. Surprisingly, it doesn’t require “primordial” ethnic or tribal distinctions to engage that impulse. Minor differences are often sufficient to elicit acute ingroup-outgroup discrimination. The psychologist Henri Tajfel demonstrated this in a landmark series of studies to determine how minor those differences can be. In each successive study, Tajfel divided test subjects into groups according to increasingly trivial criteria, such as whether they preferred Klee or Kandinsky paintings or underestimated or overestimated the number of dots on a page. The results were as intriguing as they were disturbing: even the most trivial groupings induced discrimination.2, 3

However, the most significant and unexpected discovery was that simply telling subjects that they belonged to a group induced discrimination, even when the grouping was completely random. Upon learning they officially belonged to a group, the subjects reflexively adopted an us-versus-them, zero-sum game attitude toward members of other groups. Many other researchers have conducted related experiments with similar results: a government or an authority (like a researcher) designating group distinctions is, by itself, sufficient to spur contentious group rivalry. When group rewards are at stake, that rivalry is magnified and readily turns malign.

The extent to which authority-defined groups and competition for group benefits can foment nasty factionalism was demonstrated in the famous 1954 Robbers Cave experiment, in which researchers brought boys with identical socioeconomic and ethnic backgrounds to a summer camp, dividing them randomly into two official groups. They initially kept the two groups separate and encouraged them to bond through various group activities. The boys, who had not known each other before, developed strong group cohesion and a sense of shared identity. The researchers then pitted the groups against each other in contests for group rewards to see if inter-group hostility would arise. The group antagonism escalated far beyond their expectations. The two groups eventually burned each other’s flags and clothing, trashed each other’s cabins, and collected rocks to hurl at each other. Camp staff had to intervene repeatedly to break up brutal fights. The mounting hostility and risk of violence induced the researchers to abort that phase of the study.4 Other researchers have replicated this experiment: one follow-up study resulted in knife fights, and a researcher was so traumatized he had to be hospitalized for a week.5, 6

How does this apply to the Blues and Greens? As in the Tajfel experiments, the Byzantine race factions had formed a group division based on a trivial distinction—the preference for a color and a horse racing team. However, for many years, the rivalry remained relatively benign. This was likely because the emperors had long played down the factional distinction and maintained a tradition of race neutrality: if they favored a faction, they avoided openly showing it. But that tradition ended a few years before the Nika Riot when emperors began openly supporting either one faction or the other. But more importantly, they extended their support outside the hippodrome with official policies that benefited members of their preferred faction. The emperors Marcian, Anastasius, and Justinian adopted official employment preferences, allocating positions to members of their favored faction and blocking the other faction from coveted jobs. To cast it in modern terms, they began a program of “race-based” affirmative action and identity politics.7, 8

In nearly all the countries where affirmative action programs have been implemented, they have an invidious effect on the group that benefits, imbuing them with a sense of insecurity and defensiveness over the benefits they receive.

Official recognition of the group distinction enhanced the us-versus-them sense of difference between the factions, and the affirmative action scheme turned this sense of difference into bitter antagonism, which eventually exploded in violence. Procopius, our primary contemporary source, placed the blame for the mounting antagonism and the riots squarely on Justinian’s program of identity politics. It had not only promoted an us-versus-them mindset in the factions, it also incited vicious enmity between them, turning a trivial color preference and sporting rivalry into a deadly “race war.”

Considering how identity politics could elicit violence from randomly assembled groups like the Blues and Greens, it is easy to imagine how disastrous identity politics can be when applied to groups that already have some long-standing, historic sense of difference. Indeed, there have been numerous instances of this in history, most ending tragically. For example, Tutsis and Hutus enjoyed centuries of relatively peaceful coexistence in Rwanda up until Belgian colonialists arrived; when the Belgians issued identity cards distinguishing the two groups and instituted affirmative action, it ossified a formerly porous group distinction and infused it with bitter rivalry, preparing the path to genocide. Likewise, when Yugoslavia instituted its “nationality key” system, with educational and employment quotas for the country’s constituent ethnic groups, it hardened group distinctions, pitting the groups against each other and setting the stage for genocide in the Balkans. And, when the Sri Lankan government opted for identity politics and affirmative action, it spawned violent conflict and genocide that destroyed a once peaceful and prosperous country. This last example—Sri Lanka—is so illustrative of the dangers of identity politics that we’ll examine it in more detail.

Sri Lanka: How Identity Politics Destroyed Paradise

She is a fabulous isle just south of India’s teeming shore, land of paradise … with a proud and democratic people … Her flag is the flag of freedom, her citizens are dedicated to the preservation of that freedom … Her school system is as progressive as it is democratic. —1954 TWA TOURIST VIDEO

Sri Lanka is an island off India’s southeast coast blessed with copious amounts of arable land and natural resources. It has an ethnically diverse population, with the two main groups being Sinhalese (75 percent) and Tamils (15 percent). Before Sri Lanka’s independence in 1948, there was a long history of harmony between these groups. That history goes back at least to the fourteenth century when the Arab traveler Ibn Battuta observed how the different groups “show respect” for each other and “harbor no suspicions.” On the eve of Sri Lanka’s independence, a British governor lauded the “large measure of fellowship and understanding” that prevailed, and a British soldiers’ guide noted that “there are no historic antagonisms to overcome.” With quiescent communal relations, abundant natural resources, and one of the highest literacy rates in the developing world, newly independent Sri Lanka was poised to flourish and prosper. Nobody doubted it would outperform countries like South Korea and Singapore, with the British governor dubbing it “the best bet in Asia.”

It turned out to be a very poor bet. A few years after Sri Lanka’s independence, violent communal conflict erupted, culminating in a protracted civil war and genocide. By the time it ended, over a million people had been displaced or killed. Sri Lanka’s per capita GDP, which was on par with South Korea’s in 1960, was only one-tenth of it by 2009. As in sixth-century Byzantium, identity politics precipitated the calamity.

Turning a Disparity into a Disaster

At the end of British colonial rule in Sri Lanka, there was significant educational and income disparity between Sinhalese and Tamils. This arose by happenstance rather than because of discriminatory policy. The island’s north, where Tamils predominate, is arid and poor in resources. Because of this, the Tamils devoted their productive energy toward developing human capital, focusing on education and cultivating professional skills. This focus was abetted by American missionaries, who set up schools in the north, providing top-notch English-language education, particularly in math and the physical sciences. As a result, Tamils accounted for an outsized proportion of the better-educated people on the island, particularly in higher-paying fields like engineering and medicine.

Because of the Tamils’ superior education, the British colonial administration hired them disproportionately compared to the Sinhalese. In 1948, for example, Tamils accounted for 40 percent of the clerical workers employed by the colonial government, greatly outstripping their 15 percent share of the overall population. This unequal outcome had nothing to do with overt discrimination against the Sinhalese; it merely reflected the different levels and types of education achieved by the different ethnic groups.

When Sri Lanka gained independence, it passed a constitution that prohibited discrimination based on ethnicity. But a few years after that, an opportunist politician, S.W.R.D. Bandaranaike, figured he could advance his career by cynically appealing to identity politics, stoking Sinhalese envy over the Tamils’ over-representation in higher education and government. He launched a divisive campaign to eliminate the disparity, which spurred the majority Sinhalese to elect him. After his election in 1956, Bandaranaike passed a law that changed the official language from English to Sinhala and consigned students to separate Tamil and Sinhalese education “streams” rather than having them all learn English. As one Sinhalese journalist wrote, this divided Sri Lanka, depriving it of its “link language”:

That began a great divide that has widened over the years. Children now go to segregated schools or study in separate streams in the same school. They don’t get to know other people of their own age group unless they meet them outside.

Beyond eliminating Sri Lanka’s common “link language,” this law also functioned as a de facto affirmative action program for Sinhalese. Tamils, who spoke Tamil at home and received their higher education in English, could not gain Sinhala proficiency quickly enough to meet the government’s requirement. So, many of them lost their jobs to Sinhalese. For example, the percentage of Tamils employed in government administrative services dropped dramatically: from 30 percent in 1956 to five percent in 1970; the percentage in the armed forces dropped from 40 percent to one percent.

As has happened in many other countries, Sri Lanka’s identity politics went hand-in-hand with expanded government. Sinhalese politicians made it clear: government would be the tool to redress perceived ethnic disparities. It would allocate more jobs and resources, and that allocation would be based on ethnicity. As one historian writes: “a growing perception of the state as bestowing public goods selectively began to emerge, challenging previous views and breeding mistrust between ethnic communities.” Tamils responded to this by launching a non-violent resistance campaign. With ethnic dividing lines now clearly drawn, mobs of Sinhalese staged anti-Tamil counter-demonstrations and then riots in which hundreds—mostly Tamils—were killed. The us-versus-them mentality was setting in.

Bandaranaike was eventually assassinated by radicals within his own movement. But his widow, Sirimavo, who was subsequently elected prime minister, resolved to maintain his top priorities—expansive government and identity politics. She nationalized numerous industries and launched development projects that were directed by ethnic and political considerations rather than actual need. She also removed the constitutional ban on ethnic discrimination so that she could aggressively expand affirmative action. The existing policies had already cost so many Tamils their jobs that they were now under-represented in government. However, they remained over-represented in higher education, particularly in the sciences, a disparity that Sirimavo and her political allies resolved to eliminate. In a scheme that American universities like Harvard would later emulate, the Sri Lankan universities began to reject high-scoring Tamil applicants in favor of manifestly less-qualified Sinhalese with vastly lower test scores.

Just like Justinian’s “race” preferences, the Sri Lankan affirmative action program exacerbated us-versus-them attitudes, deepening the group divide and spurring enmity between groups. As one Sri Lankan observed:

Identity was never a question for thousands of years. But now, here, for some reason, it is different … Friends that I grew up with, [messed around] with, got drunk with, now see an essential difference between us just for the fact of their ethnic identity. And there are no obvious differences at all, no matter what they say. I point to pictures in the newspapers and ask them to tell me who is Sinhalese and who is Tamil, and they simply can’t tell the difference. This identity is a fiction, I tell you, but a deadly one.9

The lessons of the various affirmative action programs in Sri Lanka were clear to everyone: individuals’ access to education and government employment would be determined by ethnic group membership rather than individual merit, and political power would determine how much each group got. If you wanted your share, you needed to mobilize as a group and acquire and maintain political power at any cost. The divisive effects of these lessons would be catastrophic.

The realization that they would forever be at the mercy of an ethnic spoils system, along with the violent attacks perpetrated against them, induced the Tamils to form resistance organizations—most notably, the Liberation Tigers of Tamil Eelam (LTTE). The LTTE attacked both Sri Lankan government forces and individual Sinhalese, initiating a deadly spiral of attacks and reprisals by both sides committing the sort of atrocities that are tragically common in ethnic conflicts: burning people alive, torture, mass killings, and so on. Over the following decades, the conflict continued to fester, periodically escalating into outright civil war. Ultimately, over a million people would be killed or displaced.

The timeline of the Sri Lankan conflict establishes how communal violence originated from identity politics rather than the underlying income and occupational disparity between the groups. That disparity reached its apex at the beginning of the twentieth century. Yet, there was no communal violence at that point or during the next half-century. It was only after the introduction of affirmative action programs that ethnic violence erupted. The deadliest attacks on Tamils occurred an entire decade after those programs had enabled Sinhalese to surpass Tamils in both income and education. As Thomas Sowell observed: “It was not the disparities which led to intergroup violence but the politicizing of those disparities and the promotion of group identity politics.”10

Consequences of Identity Politics in Sri Lanka and Beyond

Sri Lanka’s experience highlights some underappreciated consequences of identity politics. Most notably, one would expect that affirmative action programs would have warmed the feelings of the Sinhalese toward the Tamils. After all, they were receiving preferences for jobs and education at the Tamils’ expense. Yet, precisely the opposite happened: as the affirmative action programs were implemented, Sinhalese animus toward the Tamils progressively worsened. This pattern has been repeated in nearly all the countries where affirmative action has been implemented: affirmative action programs have an invidious effect on the group that benefits, imbuing them with a sense of insecurity and defensiveness over the benefits they receive. That group tends to justify the indefinite continuation of these benefits by claiming that the other group continues to enjoy “privilege”—or by demonizing them and claiming that they are “systemically” advantaged. Thus, the beneficiaries of affirmative action are often the ones to initiate hostilities. In Rwanda, for example, it was Hutu affirmative action beneficiaries who perpetrated the violence, not Tutsis. The situation in Sri Lanka was analogous, with Sinhalese instigating all of the initial riots and pogroms against the Tamils.

One knock-on effect of identity politics in Sri Lanka was that it ultimately benefited some of the wealthiest and most privileged people in the country. The government enacted several affirmative action schemes, each increasingly contrived to benefit well-heeled Sinhalese. The last of these implemented a regional quota system that was devised so that aristocratic Sinhalese living in the Kandy region would compete for spots against poor, undereducated Tamil farm workers. As one Tamil who lost his spot in engineering wrote: “They effectively claimed that the son of a Sinhalese minister in an elite Colombo school was disadvantaged vis-à-vis a Tamil tea plucker’s son.” This follows the pattern of many other affirmative action programs around the world: the greatest beneficiaries are typically the most politically connected (and privileged) individuals within the group receiving affirmative action. They are often wealthier and more privileged than many of the individuals against whom affirmative action is directed. This has been well documented in India, which has extensive data on the subgroups that benefit from its affirmative action programs.

One unexpected consequence of identity politics in Sri Lanka was rampant corruption. When Sri Lanka became independent, its government was widely deemed one of the least corrupt in the developing world. However, as affirmative action programs were implemented and expanded, corruption increased in lockstep. The adoption of affirmative action set a paradigm that pervaded the government: whoever held power could steer government resources to whomever they deemed “underserved.” A baleful side effect of ethnicity-based distortion of government policy is that it undermines and erodes more general standards of government integrity and transparency, legitimating a paradigm of corruption: if it is acceptable to direct policy for the benefit of an ethnic group, is it not also acceptable to do so for the benefit of a clan or an individual? It is a small step to go from one to the other, a step that many Sri Lankan leaders and bureaucrats took. Today, Sri Lanka’s government, which once rivaled European governments in transparency, remains highly corrupt. This pattern has been repeated in other countries. For example, after the Federation of Malaysia expelled Singapore, it adopted an extensive affirmative action program, whereas Singapore prohibited ethnic preferences. Malaysia subsequently experienced proliferating corruption, whereas Singapore is one of the least corrupt countries in the world today.

Perhaps the most profound consequence of identity politics in Sri Lanka was that it ultimately made everybody in the country worse off. After World War II, per capita income in Sri Lanka and Singapore was nearly identical. But after it abandoned its shared “link language” and adopted ethnically divisive policies, Sri Lanka was plagued by violent conflict and economic underperformance; today, one Singaporean earns more than seven Sri Lankans put together. All the group preferences devised to elevate Sinhalese brought down everyone in the country—Tamil, Sinhalese, and all the other groups alike. Lee Kuan Yew, Singapore’s “founding father,” attributed that failure to Sri Lanka’s divisive policies, saying that if Singapore had implemented similar policies, “we would have perished politically and economically.” There are echoes of this in other countries that have implemented identity politics. When I visited Rwanda, I asked Rwandans of various backgrounds whether they thought distinguishing people by race or ethnicity ever helped anyone in their country. There was complete unanimity on this point: after they got over pondering why anyone would ask such a naïve question, they made it very clear that distinguishing people by group made everyone, whether Hutu or Tutsi, distinctly worse off. In the Balkans, I got similar answers from Bosnians, Croatians, Serbians, and Kosovars.

The Perilous Path of Identity Politics

Decades of sociological research and millennia of history have demonstrated that the tribal instinct is both powerful and hardwired into human behavior. As political scientist Harold Isaacs writes:

If anything emerges plainly from our long look at the nature and functioning of basic group identity, it is the fact that the we-they syndrome is built in. It does not merely distinguish, it divides … the normal responses run from … indifference to depreciation, to contempt, to victimization, and, not at all seldom, to slaughter.11

The history of Byzantium and Sri Lanka demonstrates that this tribal instinct is extremely easy to provoke. All it takes is official recognition of group distinctions and some group preferences to balkanize people into bitterly antagonistic groups, and the consequences are potentially dire. Even if a society that is balkanized in this way avoids violent conflict, it is still likely to be plagued by all the concomitants of social fractionalization: higher corruption, lower social trust, and abysmal economic performance.

This article appeared in Skeptic magazine 29.2
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It is therefore troubling to see the U.S. government and institutions adopt Sri Lankan-style policies that emphasize group distinctions. Echoing Sri Lanka’s separate language “streams,” many American universities now have ethnically segregated orientation and graduation ceremonies. Some offer “theme houses”—dormitories segregated by ethnicity. An Illinois public high school offers separate mathematics classes for Black and Latino students. As the U.S. continues down the perilous path of identity politics, it is unlikely to devolve into another Bosnia or Sri Lanka overnight. But the example of Sri Lanka is a dire warning: a country that was once renowned for its communal harmony quickly descended into violence and economic failure—all because it sought to redress group disparities with identity politics.

Surveys and statistics are now flashing warning signs in the United States. A Gallup poll found that while 70 percent of Black Americans believed that race relations in the United States were either good or very good in 2001, only 33 percent did in 2021.12 Other statistics have shown that hate crimes have been on the rise over that time.13 In the last year, we have also seen the spectacle of angry anti-Israel protesters hammering on the doors of a college hall, terrorizing the Jewish students locked inside, and a Stanford professor telling Jewish students to stand in the corner of a classroom. While identity politics have increasingly directed public policy and institutions, ethnic relations have deteriorated rapidly. This—and a lot of history—suggest it’s time for a different approach.

About the Author

Jens Kurt Heycke was educated in Economics and Near Eastern Studies at the University of Chicago, the London School of Economics, and Princeton University. He worked as an early employee or executive in several successful technology startups. Since retiring from tech, he has worked as a writer and researcher, conducting field research in more than forty countries, from Bosnia to Botswana. He is the author of Out of the Melting Pot, Into the Fire: Multiculturalism in the World’s Past and America’s Future.

References

1. Procopius (1914). History of The Wars, Books I and II, trans. H. B. Dewing. Macmillan.
2. https://bit.ly/49BIyJN
3. https://bit.ly/3OVJ8tp
4. Sherif, M. (1961). The Robbers Cave Experiment: Intergroup Conflict and Cooperation. University of Oklahoma Press.
5. Diab, L. N. (1970). A study of intragroup and intergroup relations among experimentally produced small groups. Genetic Psychology Monographs, 82(1), 49–82.
6. Rabbie, J. M. (1982). The Effects of Intergroup Competition and Cooperation on Intragroup and Intergroup Relations. In Cooperation and Helping Behavior (pp. 123–149). Academic Press.
7. Malalas, J., Jeffreys, E., Jeffreys, M., & Scott, R. (1986). The Chronicle of John Malalas: A Translation. Australian Association for Byzantine Studies.
8. Procopius (1927). Secret History, trans. Richard Atwater. Pascal Covici, Inc.
9. McGowan, W. (1993). Only Man is Vile: The Tragedy of Sri Lanka. Pan Books.
10. Sowell, T. (2004). Affirmative Action Around the World: An Empirical Study. Yale University Press.
11. Isaacs, H. (1975). Idols of the Tribe. Harper & Row.
12. https://bit.ly/3Td5l8W
13. https://bit.ly/3IgvNZ3

I’ve often stated that planets come in a wide range of sizes but rarely do I find myself stating they come in a wide range of shapes too! The discovery of WASP-107b is a case  in point since this planet is the size of Jupiter but only a tenth of its mass. But there’s more… Using the James Webb Space Telescope a team of astronomers have accurately identified that the planet has an east-west asymmetry in its atmosphere, in other words, it’s lopsided. It is tidally locked to the star and on one side, the atmosphere seems to be inflated compared to the other. 

Planets orbiting other stars are known as exoplanets. WASP-107b is one such planet in orbit about a star 200 light years away in the constellation of Virgo. The first exoplanet detection was confirmed in 1992 and since then over 5,000 alien planets have been identified. A multitude of different techniques are used to hunt them down from searching for dips in light from distant stars to analysing the spectra of a star. A wide variety of planet systems have been found from Earth-like possibly habitable planets to great big gas giants like Jupiter. With the new generation of space telescopes like the JWST it is now possible to study the atmosphere of exoplanets to learn even more about them.

Artist impression of the James Webb Space Telescope

A team of astronomers from the University of Arizona have been using the JWST with an international group of researchers to study WASP-107b. They discovered the east-west asymmetry of the planet as it passed in front of its host star just like the Moon does during a solar eclipse. 

The shape of the planet is an atmospheric phenomenon but of course when it comes to gas giants like Jupiter that’s pretty much referring to the planet itself. It’s not just a physical asymmetry though as there are temperature and cloud property differences between the eastern and western hemisphere. It’s now important to explore the asymmetry observed to learn more about the dynamics of the planet and whether it’s a unique phenomenon. 

“Icy and Rocky Worlds” is a new exoplanet infographic by Slovak artist and space enthusiast Martin Vargic. It’s available as a wall poster at his website. Image Credit and Copyright: Martin Vargic

One element of the planet which is cause for investigation and likely cause is that it’s tidally locked to the star. The force of gravity from the star and the force of gravity on the planet have acted upon each other to lock one face of the planet to the star. This means one hemisphere is constantly illuminated and warmed by the star while the other hemisphere is permanently night! Tidal locking is not unique to WASP-107b though so if this is the cause then the asymmetry should be common. 

To make their finding, the team used a technique known as transmission spectroscopy. In this technique, observations are made of the starlight as it passes through the atmosphere of the planet during transit events. As the light passes through atmospheric gasses, the presence of different gasses interacts with the light in different ways that can be seen during spectral analyses. 

What does make WASP-107b unique is low gravity and low density giving rise an atmosphere that is somewhat over-inflated compared to other alien worlds of this mass. This is the first time such an asymmetry has been seen so it will be interesting to see how unique this fascinating world really is. 

Source : Astronomers catch a glimpse of a uniquely inflated and asymmetric exoplanet

The post Astronomers Find a Strange Lopsided Planet appeared first on Universe Today.

A few kindly readers sent in some photos, so we’re good for a few days. One such reader was ecologist Susan Harrison of UC Davis, who sent in bird photos with a cute title (see the asterisk at bottom):

Return of the Drinking Gang*

In the warmth of mid-September, a wave of southbound songbirds stopped off at the little artificial stream in our back yard.  These migrants wore their less-than-splendid, nonbreeding plumage; some of them were probably youngsters on their first flight south.   The sound of tinkling water drew them in, and the foraging opportunities in the overhanging elderberry bush helped keep them around for a few days.  Most of them posed on either the same curved branch or the same pointed rock, glancing about for predators before dashing down to the precious water.

Nashville Warbler (Leiothlypis ruficapilla):

Wilson’s Warbler (Cardellina pusilla):

Yellow Warbler (Setophaga petechia):

Black-throated Gray Warbler (Setophaga nigrescens):

Western Tanager (Piranga ludoviciana):

Western Flycatcher (Empidonax difficilis) – this photo is from April, since the one that visited in September was too fast for me:

Willow Flycatcher (Empidonax trailii)  This photo is from the nearby creek;  I added it to illustrate why the Western Flycatcher has “difficilis” in its name (they are two of the multiple co-occurring species in the genus Empidonax):

Resident, nonmigratory songbirds were quite thirsty at this time of year as well.

House Finch (Haemorhous mexicanus):

Nuttall’s Woodpecker (Dryobates nuttalli):

Black Phoebe (Sayornis nigricans):

California Scrub-Jay (Aphelocoma californica):

*The title is a repeated tribute to the Breakfast Crew series by Doug Hayes

Bacteria that have been genetically engineered to work like computers can solve a range of problems, using a very simple type of artificial intelligence

An AI-assisted analysis of satellite images suggests the vapour trails produced by aircraft have a net cooling effect in the daytime because they reflect sunlight back into space

Biosafety Now is fine working with a pro-virus, misinformation doctor to prevent a potential pandemic. What about a doctor who worked with patients and countered misinformation during an actual pandemic?

The post A “Biosafety” Organization Partnering With Dr. Jay Bhattacharya To Guard Against Viruses Is Like A Zebra Teaming Up With A Lion To Promote Vegetarianism first appeared on Science-Based Medicine.

Voice assistants can build profiles of their users’ habits and preferences, but the consistency and accuracy of these profiles vary

Venus is often described as a hellscape. The surface temperature breaches the melting point of lead, and though its atmosphere is dominated by carbon dioxide, it contains enough sulfuric acid to satisfy the comparison with Hades.

But conditions throughout Venus’ ample atmosphere aren’t uniform. There are locations where some of life’s building blocks could resist the planet’s inhospitable nature.

Among the rocky planets, Venus has by far the largest atmosphere by volume. So, while its surface is inhospitable, its atmosphere has regions that are the most Earth-like of anywhere else in the Solar System. Scientists have wondered if life could survive in parts of the planet’s upper atmosphere, and the discovery of the potential biomarker phosphine (though it was later disproved) generated more interest.

Some research suggests that life could exist within Venus’ voluminous clouds. Image Credit: Abreu et al. 2024.

One reason Venus keeps coming up in discussions around habitability is that it’s accessible, whereas exoplanets aren’t. Venus is easily reached, and we currently have one orbiter in place, the Japanese Akatsuki spacecraft. Three other missions to Venus are planned for the mid-2030s: NASA’s Veritas and DAVINCI and the ESA’s EnVision.

Nobody is convinced we’ll find life on Venus. But the planet can teach us a lot about chemistry and biology and their limits.

In new research, a team of scientists tested different building blocks under Venus-like conditions to see if they can withstand the planet’s perilous nature. The research is “Simple lipids form stable higher-order structures in concentrated sulfuric acid.” The lead author is Daniel Duzdevich from the Department of Chemistry at the University of Chicago. The paper is in pre-print now and has been submitted to the journal Astrobiology.

Venus’ surface isn’t a candidate for habitability. But regions in its atmosphere may be. The issue is that much of Venus’ sulfuric acid is concentrated in discrete clouds rather than diffused throughout its atmosphere.

“The Venusian surface is sterilizing, but the cloud deck includes regions with temperatures and pressures conventionally considered compatible with life. However, the Venusian clouds are thought to consist of concentrated sulfuric acid,” the authors explain.

Cloud structure in the Venusian atmosphere in 2016, revealed by observations in the two ultraviolet bands by Akatsuki. Credit: Kevin M. Gill

They wanted to test if any of life’s “fundamental features” could withstand Venus’ challenging environment. Can any of life’s chemistry resist sulfuric acid?

“Organic chemistry in concentrated sulfuric acid is rarely studied yet surprisingly rich, with recent work supporting the notion that complex organic molecules, including amino acids and nucleobases can be stable in this unusual solvent,” the authors write.

If simple organic molecules can remain stable in sulfuric acid, it’s an interesting observation in favour of life. But it takes more complexity than that, and that’s what this research focuses on.

“One fundamental feature of life is cellularity: the differentiation of “inside” (the contents of a cell, including information, molecules, and all their interactions) and “outside” (the environment), in addition to a mechanism for communication and exchange between the two,” Duzdevich and his co-researchers write.

The researchers focused on lipids, the membranes that define cells. Lipids are the foundation of cellular structure, not only as membranes between cells but also as membranes that create distinct parts of the interior of cells. “The cell membrane is especially important in extreme environments because it must help maintain the homeostasis of the intracellular environment against otherwise harsh external conditions,” the authors write.

The researchers performed lab experiments to determine whether lipids can withstand Venus’ harsh environment. They asked two questions: Can simple lipids resist decomposition by sulfuric acid, and can the lipids form stable higher-order structures like they do in cells?

The researchers placed masses of lipids in vials and exposed them to different concentrations of sulfuric acid and measured each vial at specific intervals. Their results show that some lipids can survive exposure to the acid and even form structures.

This figure from the research shows the vesicle-like structures that formed after concentrated sulfuric acid was added to solid lipids. Each panel is a different region of the same sample taken on the same day. Subsequent images showed that the structures remained intact even after seven days. Image Credit: Duzdevich et al. 2024.

Interested readers can explore the detailed chemistry for themselves.

In summary, the results suggest that stable membranes can form and persist in the presence of sulfuric acid. Life uses water as a solvent because it’s a polar molecule, can form networks of hydrogen bonds, has a high heat capacity, and, of course, is abundant on Earth. But it’s not abundant everywhere.

Critically, this study shows that some aspects of the chemistry of life don’t require water as a solvent. Instead, they can tolerate and use sulfuric acid as a solvent. “Here, we show the unexpected stability of complex membranous structures in another polar solvent: concentrated sulfuric acid,” the authors write.

What does this mean for exoplanet habitability and astrobiology?

“Concentrated sulfuric acid as a planetary solvent could be widespread on exoplanets, either on exo-Venuses or on other rocky planets that are desiccated as a result of the stellar activity of their host star,” the researchers explain.

And, of course, sulfuric acid is present in large amounts at Venus.

“Concentrated sulfuric acid is also present in our immediate planetary vicinity as a dominant liquid in the clouds of Venus, further emphasizing its importance for planetary science, planetary habitability, and astrobiology,” the authors write.

The question of whether life could somehow survive in Venus’ clouds is one that won’t go away. We’re new at the astrobiology game, and we’re simply not in a position to rule things out. It might seem far-fetched, but science is an evidence game, and evidence can be surprising.

This study doesn’t present evidence that can answer the question—big questions like this are answered incrementally—but it does present an intriguing result.

“By demonstrating the stability of lipid membranes in this aggressive solvent, we have taken a significant step forward in exploring the potential habitability of the concentrated sulfuric acid cloud environment on Venus,” the authors conclude.

The post Another Building Block of Life Can Handle Venus’ Sulphuric Acid appeared first on Universe Today.

By 2100, hospitalizations from diarrheal diseases are predicted to increase in the city of Dhaka in Bangladesh as a result of climate change, even if global warming stays under 2 degrees Celsius, according to a new study.

Astronomers listened for radio signals emanating from planets in the TRAPPIST-1 system, but found no evidence of any interplanetary communications

We are more likely to use an ineffective treatment after slight symptom improvement, even when the changes are coincidental.

The post Post Hoc Bias in Medicine first appeared on Science-Based Medicine.

Each year, about 2.2 million bone-grafting procedures are performed worldwide, the gold standard of care being autografting, which uses the patient's own bone for tooth implantation and to repair and reconstruct parts of the mouth, face and skull.

Using mathematical modeling, researchers found a way to maintain cooperation without relying on complex norms or institutions.

A 2020 microlensing event was caused by a planetary system with an Earth-like planet and brown dwarf. The star type was uncertain. The team has determined that the star is a white dwarf, a system resembling what our sun-Earth system will look like in 8 billion years. The good news: the planet survived its star's red giant phase, so maybe Earth will too. The bad news: it's still uninhabitable.

Researchers tested an advanced publicly available genAI model, GPT-4, to determine its ability to answer questions across five key areas of patient safety in the 50-question self-assessment for the Certified Professional in Patient Safety (CPPS) exam, a standardized multiple-choice certification exam for patient safety professionals. GPT-4 answered 88% of the questions correctly, demonstrating a high level of performance.

Researchers have studied how nanoplastic affects aquatic organisms in lakes and rivers. The results are surprising and the researchers are the first to show that some species are being wiped out, while others -- such as cyanobacteria that contribute to algal blooms -- are completely unaffected.

Astronomers have published a gigantic infrared map of the Milky Way containing more than 1.5 billion objects -- the most detailed one ever made. Using the European Southern Observatory's VISTA telescope, the team monitored the central regions of our Galaxy over more than 13 years. At 500 terabytes of data, this is the largest observational project ever carried out with an ESO telescope.

Squinting into the treetops won't reveal the tiny organisms up there. But these creatures leave clues, in the form of DNA, on the leaves and branches. Now, researchers report that they have developed a way to collect this genetic material: a drone with a specialized fabric probe. The team flew the drone above the rainforest and, based on DNA collected by the probe, identified the invertebrates in the canopy.

Scientists successfully tested a new way to produce sustainable jet fuel from lignin-based agricultural waste. The team's research demonstrated a continuous process that directly converts lignin polymers, one of the chief components of plant cells, into a form of jet fuel that could help improve performance of sustainably produced aviation fuels.

In a surprise finding, astronomers using NASA's Hubble Space Telescope have discovered that the blowtorch-like jet from a supermassive black hole at the core of a huge galaxy seems to cause stars to erupt along its trajectory. The stars, called novae, are not caught inside the jet, but apparently in a dangerous neighborhood nearby.