Wednesday, February 19, 2020

Improving innovation: Assessing the environmental impacts of emerging technology

Improving innovation: Assessing the environmental impacts of emerging technology
Credit: Yale School of Forestry & Environmental Studies
Although many new technologies offer the promise to improve human welfare, they can also produce unintended environmental consequences. And while applying the principles of life cycle assessment (LCA) early in technology development can provide important insights about how to avoid damage to the environment, existing methods focus on products or processes that are already commercially established.
Meanwhile, the procedures and tools used to assess emerging technologies tend to be applied on an ad hoc basis, with no clear guidelines as to what methods are available, applicable or appropriate.
A new special issue of Yale's Journal of Industrial Ecology addresses this gap with cutting edge research that advances methods, tests new approaches against emerging technologies, and assesses novel technologies for transportation, infrastructure, energy, and materials. The special issue, "Life Cycle Assessment for Emerging Technologies," includes findings with far-reaching implications for technology developers and policy makers.
For example, two papers reveal the potential environmental consequences of the rapid increase in production of the lithium-ion battery packs that power everything from electric cars to portable computing devices. In contrast to earlier analyses, these studies show that, on a global scale, expansion of lithium production is likely to continue without being slowed by resource constraints for up to three more decades. Meanwhile, localized environmental impacts associated with extraction and processing of high-grade lithium ion brines are likely to create geographic imbalances in the environmental impacts and benefits of that expansion.
The issue also includes papers on fresh approaches to comparative assessment of emerging energy technologies. These new analyses make clear that the age of single-technology solutions at massive, industrial scales is coming to a close. The papers here examine environmental impact of alternative energy futures for algae-derived fuels, hydrogen, solar, and off-shore wind energy technologies.
"The research in this issue advances not only the understanding and methods for the environmental assessment of novel technologies, italso shows the potential for refashioning the tools of systematic environmental assessment to apply at the earliest stages of the innovation cycle," said Reid Lifset, editor-in-chief of the Journal of Industrial Ecology.
Another innovation is the creation of LCA inventories (databases) that can be aligned with the scenarios used in the integrated  models (IAMs) widely used in climate change modeling. Methods to incorporate technology readiness levels (TRLs) that are used in R&D management allow connection of LCA with other complementary tools such as multicriteria decision analysis, , techno-economic analysis, and the development of data repositories for emerging materials, processes, and technologies
Environmental impacts of demand-side technologies and strategies for carbon mitigation

More information: Hanjiro Ambrose et al. Understanding the future of lithium: Part 1, resource model, Journal of Industrial Ecology (2019). DOI: 10.1111/jiec.12949

Communicating science can benefit from scientists 'being human'

Communicating science can benefit from scientists 'being human'
Luis Martinez-Lemus (right) discusses research findings with Lauren Park (left) and Jaume Padilla at the University of Missouri's Dalton Cardiovascular Research Center. Credit: University of Missouri
First be a human, then be a scientist.
As social beliefs and values change over time, scientists have struggled with effectively communicating the facts of their research with the public. Now, a team of researchers from the University of Missouri and the University of Colorado believe scientists can gain trust with their  by showing their human side. The researchers say it can be as simple as using "I" and first-person narratives to help establish a  with the audience.
The study was published in the journal PLOS ONE, one of the world's leading peer-reviewed journals focused on science and medicine.
Traditionally, scientists might not always consider the audience evaluating them when sharing the facts of their research, said SiSi Hu, a graduate instructor and research assistant in the Missouri School of Journalism and corresponding author on the study.
"Most of the time the public understands what the scientist is presenting to them, but each person understands in their own way," Hu said. "Therefore, there needs to be a sense of mutual understanding—the scientist must trust the audience as much as the audience trusts the scientist with his or her message."
After completing a literature review of perceived authenticity, the team did not find any appropriate measures relating to . Therefore, based on existing literature, they created a theory of perceived authenticity in science communication—a scientist is someone with their own belief system beyond institutional affiliations, and their messaging reflects those values.
Study participants tested the theory by completing a 19-question survey on authenticity. Survey questions were based on a description of published plant science research and a group of randomly assigned narrative messages attempting to explain that research. The group of messages included a story drawn from the real-life experiences of J. Chris Pires of how he became interested in plant science. Pires is a Curators Distinguished Professor in the Division of Biological Sciences in the MU College of Arts and Science, and an investigator in the Christopher S. Bond Life Sciences Center.
Researchers found that if a scientist shares the story of the development of the origin of his or her interest in the subject through a first-person narrative—without use of institutional affiliations—people are more inclined to perceive him or her as authentic. Additionally, if a scientist only uses a first-person narrative, people are more inclined to perceive a  as authentic based on a feeling of connection.
The team also found the narrative qualities of perceived authenticity align closely with existing literature on benevolence and integrity, two  that can help an audience build trust with the person delivering the message.
"We hope our findings will provide some wisdom, guidance and tools that scientists can use to enhance their communication of their research—that is also accessible and will be trusted by the public," said Lise Saffran, director of the Master of Public Health program at the MU School of Health Professions, and lead author on the study. "People want to know the person talking to them is a human being with their own values and point of view, and that the message they share reflects those values."
The study, "Constructing and influencing perceived authenticity in  communication: Experimenting with narrative," was published in PLOS ONE.
What it means to 'know your audience' when communicating about science

More information: Lise Saffran et al, Constructing and influencing perceived authenticity in science communication: Experimenting with narrative, PLOS ONE (2020). DOI: 10.1371/journal.pone.0226711

New mathematical model reveals how major groups arise in evolution

evolution
Credit: CC0 Public Domain
Researchers at Uppsala University and the University of Leeds presents a new mathematical model of patterns of diversity in the fossil record, which offers a solution to Darwin's "abominable mystery" and strengthens our understanding of how modern groups originate. The research is published in the journal Science Advances.
The origins of many major groups of organisms in the fossil  seem to lie shrouded in obscurity. Indeed, one of the most famous examples, the , was called "an abominable mystery" by Darwin. Many modern groups appear abruptly, and their predecessors—if there are any—tend to be few in number and vanish quickly from the fossil record shortly afterwards. Conversely, once groups are established, they tend to be dominant for long periods of time until interrupted by the so-called "mass extinctions" such as the one at the end of the Cretaceous period some 66 million years ago.
Such patterns appear surprising, and often seem to be contradicted by the results from ""—using calibrated rates of change of molecules found in living organisms to estimate when they started to diverge from each other. How can this conflict be resolved, and what can we learn from it?
In a paper, Graham Budd, Uppsala University, and Richard Mann, University of Leeds, present a novel  for how the  of modern groups based on a so-called "birth-death" process of speciation and extinction. Birth-death models show how random extinction and speciation events give rise to large-scale patterns of diversity through time. Budd and Mann show that the ancestral forms of modern groups are typically rather few in number, and once they give rise to the modern group, they can be expected to quickly go extinct. The modern group, conversely, tends to diversify very quickly and thus swamp out the ancestral forms. Thus, rather surprisingly, living organisms capture a great percentage of all the diversity there has ever been.
The only exceptions to these patterns are caused by the "mass extinctions," of which there have been at least five throughout history, which can massively delay the origin of the modern group, and thus extend the longevity and the diversity of the ancestral forms, called "stem groups." A good example of this is the enormous  of the dinosaurs, which properly considered are stem-group birds. The meteorite impact at the end of the Cretaceous some 66 million years ago killed off nearly all of them, apart from a tiny group that survived and flourished to give rise to the more than 10,000 species of living birds.
The new  explains many puzzling features about the fossil record and suggests that it often records a relatively accurate picture of the origin of major groups. This in turn suggests that increased scrutiny should be paid to molecular clock models when they significantly disagree with what the  might be telling us.
Well established theories on patterns in evolution might be wrong

More information: Graham Budd and Richard Mann. The dynamics of stem and crown groups. Science Advances (2020). DOI: 10.1126/sciadv.aaz1626 , https://advances.sciencemag.org/content/6/8/eaaz1626



Bacteria on the International Space Station no more dangerous than earthbound strains
Astronaut Michael Foale sampling the potable water delivery system from the International Space Station. Credit: CC0 (public domain), NASA
Two particularly tenacious species of bacteria have colonized the potable water dispenser aboard the International Space Station (ISS), but a new study suggests that they are no more dangerous than closely related strains on Earth. Aubrie O'Rourke of the J. Craig Venter Institute and colleagues report these findings in a new paper published February 19, 2020 in the open-access journal PLOS ONE.
Shortly after the National Aeronautics and Space Administration (NASA) installed the  dispenser aboard the ISS in 2009, periodic sampling showed that two , Burkholderia cepacia and later on, Burkholderia contaminans were contaminating the . These microbes belong to a group of related Burkholderia  that cause opportunistic lung infections in people with underlying health conditions and are very difficult to kill using common sterilization techniques. The bacteria have persisted in the water dispenser despite periodic flushing with an extra-strength iodine cleaning solution.
To learn more about these bacteria, researchers sequenced the genomes of 24 strains collected from 2010 to 2014. All of the B. cepacia and B. contaminans strains were highly similar, and likely descended from original populations of these two bacteria that were present in the water dispenser when it left Earth.
The researchers conclude that the two  living within the dispenser are no more dangerous than similar strains that might be encountered on Earth. In the event of an infection, the bacteria can still be treated with common antibiotics.
The authors add: "Within each species, the 19 B. cepacia and 5 B. contaminans recovered from the ISS were highly similar on a whole genome scale, suggesting each population may have stemmed from two distinct founding strains. The differences that can be observed among the isolates of the same species are primarily located within putative plasmids. We find that the populations of Burkholderia present in the ISS PWS are likely are not more virulent than those that might be encountered on planet, as they maintain a baseline ability to lyse macrophage, but remain susceptible to clinically used antibiotics."
Life scientists differentiate microbial good and evil

More information: Aubrie O'Rourke et al, Genomic and phenotypic characterization of Burkholderia isolates from the potable water system of the International Space Station, PLOS ONE (2020). DOI: 10.1371/journal.pone.0227152

A relationship between severe winter weather and Arctic warmth?

A relationship between severe winter weather and Arctic warmth?
To what extent is severe winter weather in the U.S. related to Arctic warmth? Credit: Wikimedia Commons
A new review article published in Nature Climate Change evaluates whether severe winter weather in the United States, Europe and Asia is sensitive to Arctic temperatures. The lead author is NSF-funded scientist Judah Cohen, director of seasonal forecasting at Atmospheric and Environmental Research. 
Despite a warming planet,  weather has remained surprisingly resilient across the mid-latitudes of the Northern Hemisphere, and the winter weather headlines have often been about severe cold, heavy snowfalls, and the polar vortex. The unexpected frequency of severe winter weather was not projected by global climate models used to study climate change. It has been challenging, says Cohen, for climate scientists to attribute the recent streak of cold, snowy winters to a particular cause.
One relatively new idea has been to link severe winter weather across the United States, Europe, and Asia with Arctic amplification, the accelerated warming of the Arctic region at a rate two to three times faster than the rest of the globe. The accelerated Arctic warming was thought to be due mostly to rapidly melting Arctic sea ice.
One camp of consensus represents studies arguing that Arctic amplification is contributing to more severe winter weather. Conditions favorable for disrupting the polar vortex increase the probability of severe winter weather in the United States, Europe, and Asia, these scientists believe.
The other camp of consensus cites studies based on simulations of low Arctic sea ice using global climate models. The majority of these studies conclude that any observed increase in recent severe winter weather is likely due to chance and not Arctic amplification. In the simulations, sea ice loss does not result in more polar vortex disruptions and contributes to milder winter weather (not severe ) across the United States, Europe and Asia.
The review article discusses why Arctic warming is complicated, and not due solely to melting sea ice or snow cover. Increasing  and clouds, as well as the transport of heat and moisture from lower latitudes, are all contributing to accelerated Arctic warming, Cohen and colleagues report
Warm Arctic means colder, snowier winters in northeastern US, study says

More information: J. Cohen et al. Divergent consensuses on Arctic amplification influence on midlatitude severe winter weather, Nature Climate Change (2019). DOI: 10.1038/s41558-019-0662-y

Jet stream not getting 'wavier' despite Arctic warming

by University of Exeter
The polar jet stream. Credit: NASA/Trent L Schindler

Rapid Arctic warming has not led to a "wavier" jet stream around the mid-latitudes in recent decades, pioneering new research has shown.

Scientists from the University of Exeter have studied the extent to which Arctic amplification—the faster rate of warming in the Arctic compared to places farther south—has affected the fluctuation of the jet stream's winding course over the North Hemisphere.

Recent studies have suggested the warming Arctic region has led to a "wavier" jet stream—which can lead to extreme weather conditions striking the US and Europe.

However, the new study by Dr. Russell Blackport and Professor James Screen, shows that Arctic warming does not drive a more meandering jet stream.

Instead, they believe any link is more likely to be a result of random fluctuations in the jet stream influencing Arctic temperatures, rather than the other way around.

The study is published in leading journal Science Advances on Wednesday 19 February 2020.

Dr. Blackport, a Research Fellow in Mathematics and lead author of the study, said: "While there does appear to be a link between a wavier jet stream and Arctic warming in year-to-year and decade-to-decade variability, there has not been a long-term increase in waviness in response to the rapidly warming Arctic."

Scientists have studied whether the jet stream's meandering course across the Northern Hemisphere is amplified by climate change in recent years.

For about two decades, the jet stream—a powerful band of westerly winds across the mid-latitudes—was observed to have a "wavier" flow, which coincided with greater Arctic warming through climate change.

These waves have caused extreme weather conditions to strike mainland Europe and the US, bringing intense cold air that leads to extreme cold weather.

In this new study, Dr. Blackport and Professor Screen studied not only climate model simulations but also the observed conditions going back 40 years.

They found that the previously reported trend toward a wavier circulation during autumn and winter has reversed in recent years, despite continued Arctic amplification.

This reversal has resulted in no long-term trends in waviness, in agreement with climate model simulations, which also suggest little change in "waviness" in response to strong Arctic warming.

The results, the scientists say, strongly suggest that the observed and simulated link between jet stream "waviness" and Arctic temperatures do not represent a causal effect of Arctic amplification on the jet stream.

Professor Screen, an Associate Professor in Climate Science at Exeter added: "The well-publicised idea that Arctic warming is leading to a wavier jet stream just does not hold up to scrutiny.

"With the benefit of ten more years of data and model experiments, we find no evidence of long-term changes in waviness despite on-going Arctic warming."

Insignificant effect of Arctic amplification on the amplitude of mid-latitude atmospheric waves is published in Science Advances.
A relationship between severe winter weather and Arctic warmth?
More information: "Insignificant effect of Arctic amplification on the amplitude of midlatitude atmospheric waves" Science Advances (2020). advances.sciencemag.org/content/6/8/eaay2880
Journal information: Science Advances

Veggie-loving fish could be the new white meat

by University of California, Irvine
The Cebidichthys violaceus, known as the monkeyface prickleback,
 grows to as much as three feet long and six pounds in weight. 
Credit: NOAA/MBARI / Public domain

A secret to survival amid rising global temperatures could be dwelling in the tidepools of the U.S. West Coast. Findings by University of California, Irvine biologists studying the genome of an unusual fish residing in those waters offer new possibilities for humans to obtain dietary protein as climate change imperils traditional sources. Their paper appears in Proceedings of the Royal Society B.


The fish, Cebidichthys violaceus, is colloquially known as the monkeyface prickleback. With an acidic stomach and small and large intestines, it has a digestive system similar to that of humans. The monkeyface prickleback is among just five percent of the 30-thousand fish species that are vegetarian, nourishing themselves only with the specialized algae in the tidepools where they live.

This characteristic captured the attention of Donovan German, associate professor of ecology & evolutionary biology, researcher Joseph Heras and colleagues. They wanted to figure out how the monkeyface prickleback survives on a food source containing a low level of lipids, which are essential for all living beings. By sequencing and assembling a high-quality genome for the fish, the team discovered the secret.

"We found that the monkeyface prickleback's digestive system is excellent at breaking down starch, which we anticipated," said German. "But we also learned it has adapted to be very efficient at breaking down lipids, even though lipids comprise just five percent of the algae's composition. It is a compelling example of what we call 'digestive specialization' in the genome."

With climate change making the raising of livestock less sustainable, the discovery holds promise for developing new sources of protein for human consumption. In particular, it could be important for aquaculture, which is a possible alternative but is contending with the issue of what to feed the fish being raised.

"Using plant-based food ingredients reduces pollution and costs less," said Heras, the paper's first author. "However, most aquaculture fish are carnivores and can't handle plant lipids. Sequencing this genome has provided us a better understanding of what types of genes are necessary for breaking down plant material. If we scan additional fish genomes, we may find omnivorous fish with the right genes that could provide new candidates for sustainable aquaculture."

The monkeyface prickleback grows to as much as three feet long and six pounds in weight. It can live on land for up to 37 straight hours, thanks to the ability to breathe above water as well as under. In the past decade, it has become a culinary delicacy, appearing on plates in a number of high-end restaurants. Its flavor belies its imposing appearance.

"The taste is actually delicate and mild," said German.


Explore furtherScientists discover key to easing aquaculture's reliance on wild-caught fish
More information: Joseph Heras et al, Genomic and biochemical evidence of dietary adaptation in a marine herbivorous fish, Proceedings of the Royal Society B: Biological Sciences (2020). DOI: 10.1098/rspb.2019.2327
Journal information: Proceedings of the Royal Society B


Watching TV helps birds make better food choices

Watching TV helps birds make better food choices
Credit: University of Cambridge
By watching videos of each other eating, blue tits and great tits can learn to avoid foods that taste disgusting and are potentially toxic, a new study has found. Seeing the 'disgust response' in others helps them recognise distasteful prey by their conspicuous markings without having to taste them, and this can potentially increase both the birds' and their prey's survival rate.
The study, published in the Journal of Animal Ecology, showed that blue tits (Cyanistes caeruleus) learned best by watching their own species, whereas great tits (Parus major) learned just as well from great tits and blue tits. In addition to learning directly from trial and error, birds can decrease the likelihood of bad experiences—and potential poisoning—by watching others. Such social transmission of information about novel prey could have significant effects on prey evolution, and help explain why different bird species flock together.
"Blue tits and great tits forage together and have a similar diet, but they may differ in their hesitation to try novel food. By watching others, they can learn quickly and safely which prey are best to eat. This can reduce the time and energy they invest in trying different prey, and also help them avoid the ill effects of eating toxic prey," said Liisa Hämäläinen, formerly a Ph.D. student in the University of Cambridge's Department of Zoology (now at Macquarie University, Sydney) and first author of the report.
This is the first study to show that blue tits are just as good as great tits at learning by observing others. Previously, scientists thought great tits were better, but had only looked at learning about tasty foods. This new work shows that using social information to avoid bad outcomes is especially important in nature.
Many insect species, such as ladybirds, firebugs and tiger moths have developed conspicuous markings and bitter-tasting chemical defences to deter predators. But before birds learn to associate the markings with a disgusting taste, these species are at high risk of being eaten because they stand out.
"Conspicuous warning colours are an effective anti-predator defence for insects, but only after predators have learnt to associate the warning signal with a disgusting taste," said Hämäläinen. "Before that, these insects are an easy target for naive, uneducated predators."
Watching TV helps birds make better food choices
Credit: University of Cambridge
Blue tits and great tits forage together in the wild, so have many opportunities to learn from each other. If prey avoidance behaviour spreads quickly through predator populations, this could benefit the ongoing survival of the prey species significantly, and help drive its evolution.
The researchers showed each bird a video of another bird's response as it ate a disgusting prey item. The TV bird's disgust response to unpalatable food—including vigorous beak wiping and head shaking—provided information for the watching bird. The use of video allowed complete control of the information each bird saw.
The 'prey' shown on TV consisted of small pieces of almond flakes glued inside a white paper packet. In some of the packets, the almond flakes had been soaked in a bitter-tasting solution. Two black symbols printed on the outsides of the packets indicated palatability: tasty 'prey' had a cross symbol that blended into the background, and disgusting 'prey' had a conspicuous square symbol.
The TV-watching birds were then presented with the different novel 'prey' that was either tasty or disgusting, to see if they had learned from the birds on the TV. Both  and great tits ate fewer of the disgusting 'prey' packets after watching the bird on TV showing a disgust response to those packets.
Birds, and all other predators, have to work out whether a potential food is worth eating in terms of benefits—such as nutrient content, and costs—such as the level of toxic defence chemicals. Watching others can influence their food preferences and help them learn to avoid unpalatable foods.
"In our previous work using  as a 'model predator', we found that if one bird sees another being repulsed by a new type of prey, then both  learn to avoid it in the future. By extending the research we now see that different bird species can learn from each other too," said Dr. Rose Thorogood, previously at the University of Cambridge's Department of Zoology and now at the University of Helsinki's HiLIFE Institute of Life Science in Finland, who led the research. "This increases the potential audience that can learn by watching others, and helps to drive the evolution of the  species."
Birds learn from each other's 'disgust,' enabling insects to evolve bright colors

More information: Journal of Animal Ecology (2020). DOI: 10.1111/1365-2656.13180
Journal information: Journal of Animal Ecology 


South American volcano showing early warning signs of 'potential collapse,' research shows


Credit: CC0 Public Domain
One of South America's most prominent volcanoes is producing early warning signals of a potential collapse, new research has shown.
Tungurahua volcano in Ecuador—known locally as "The Black Giant"—is displaying the hallmarks of flank instability, which could result in a colossal landslide.
New research, led by Dr. James Hickey from the Camborne School of Mines, has suggested that the volcano's recent activity has led to significant rapid deformation on the western flank.
The researchers believe that the driving force causing this deformation could lead to an increased risk of the flank collapsing, causing widespread damage to the surrounding local area.
The research recommends the volcano should be closely monitored to watch for stronger early warning signs of potential collapse.
The study is published in the journal Earth & Planetary Science Letters.
Dr. Hickey, who is based at the University of Exeter's Penryn Campus, Cornwall, said: "Using  we have observed very rapid deformation of Tungurahua's west flank, which our research suggests is caused by imbalances between magma being supplied and magma being erupted".
Tungurahua volcano has a long history of flank collapse, and has also been frequently active since 1999. The activity in 1999 led to the evacuation of 25,000 people from nearby communities.
A previous eruption of Tungurahua, around 3,000 years ago, caused a prior, partial collapse of the west flank of the volcanic cone.
This collapse led to a wide-spread debris avalanche of moving rock, soil, snow and water that covered 80 square kilometres—the equivalent of more than 11,000 football fields.
Since then, the  has steadily been rebuilt over time, peaking with a steep-sided cone more than 5000 m in height.
However, the new west flank, above the site of the 3000 year old collapse, has shown repeated signs of rapid deformation while the other flanks remain stable.
The new research has shown that this deformation can be explained by shallow, temporary magma storage beneath the west flank. If this  supply is continued, the sheer volume can cause stress to accumulate within the volcanic cone—and so promote new instability of the west flank and its potential collapse.
Dr. Hickey added: "Magma supply is one of a number of factors that can cause or contribute to volcanic flank instability, so while there is a risk of possible flank collapse, the uncertainty of these natural systems also means it could remain stable. However, it's definitely one to keep an eye on in the future."

Reconstructing the Anak Krakatau flank collapse that caused the December 2018 Indonesian tsunami

More information: James Hickey et al, Rapid localized flank inflation and implications for potential slope instability at Tungurahua volcano, Ecuador, Earth and Planetary Science Letters (2020). DOI:

Syria’s Kurdish Contradiction



OCTOBER 8, 2017

A KURDISH RADICAL LEFT movement influenced by anarchism is, improbably, now receiving Pentagon support in the war for northern Syria. This movement, in fact, is now the United States’s closest partner among the indigenous forces fighting to take the Islamic State’s capital at Raqqa. This paradox is examined in a profusion of new books about the role of the Kurds in the world’s most confusing ongoing war.

Supporters of the Kurdish movement, which has established an autonomous zone in its region of Rojava, see it as a utopian experiment in direct democracy, and were inspired by its women fighters successfully resisting the ISIS invasion of its territory. The movement’s detractors, in contrast, call it an authoritarian one-party state in league with the Assad regime. There has been growing tension between the Rojava Kurds and the main Syrian opposition.

Meredith Tax in her openly enthusiastic A Road Unforeseen: Women Fight the Islamic State traces the development of Rojava’s militant feminism to roots in Turkey’s Kurdish rebel movement. This story begins with the founding of the separatist and socialist Kurdistan Workers Party (PKK) in 1978 and its subsequent guerilla war against the Turkish state. This set off a brutal round of CIA-backed counterinsurgency that cost thousands of lives.

Tax acknowledges that the PKK began as an authoritarian movement, and received some support from the Hafez al-Assad dictatorship in Syria. But she sees the movement growing more democratic, especially after its Fifth Congress in 1995. The PKK became part of a broader struggle for Kurdish cultural rights long denied by Turkey’s nationalist state, dramatically exemplified by Leyla Zana, the parliamentarian imprisoned in 1991 for speaking Kurdish on the chamber floor.

The decisive turn in the PKK’s transformation came after the capture of its leader Abdullah Öcalan in 1999, who rethought his politics in prison, taking inspiration from late American anarchist writer Murray Bookchin and from Mexico’s Zapatista rebel movement, which has sought local autonomy for indigenous peoples rather than secession.

Öcalan reformulated the PKK’s goal as “democratic autonomy” in the Kurdish East of Turkey rather than a separate state, and (despite the paradox that this was a diktat coming down from him as leader) a new model based on power flowing up from local councils.

This movement began to spread to the Syrian Kurds after the spontaneous 2004 uprising in the north Syrian town of Qamishli. This led to the establishment of the Rojava autonomous zone in 2012, under leadership of the Democratic Union Party (PYD), an entity in the PKK’s political orbit. Two years later, Rojava was invaded by ISIS, and Kurdish resistance at the Battle of Kobani became a global meme.

Tax portrays Turkey as conniving with ISIS forces, allowing them to use Turkish territory as a staging area for attacks on Rojava. She notes that while ISIS has launched attacks in Turkey, the most deadly of these have targeted Kurds and their leftist supporters — not the Turkish state. But she is not completely uncritical of the Rojava movement, noting its “cult of personality” around Öcalan.

In one note of hope, Tax writes that the Local Coordination Committees (LCCs), which launched Syria’s pro-democracy struggle in 2011, “resembled Rojava communes in many ways,” with their ethic of council-based democracy. But she uses the past tense, even while acknowledging that these committees continue to function amid the profusion of ruthless armed actors. She doesn’t note that they have become the de facto local government in some areas where other authority has broken down.

In the even more partisan Revolution in Rojava, co-authors Michael Knapp, Anja Flach, and Ercan Ayboga provide an in-depth look at the self-governance system in the region, but show less sensitivity about the divisions between Syria’s Kurdish movement and Arab-led opposition.

In their introductory historical overview, they refer to the past “Syrian occupation” of Rojava — actually surpassing the line of the Rojava leadership in implying that the region is not really part of Syria. They credit the Assad dynasty with “going beyond Alawite circles” to fill the state apparatus. This is a reversal of reality; after seizing power within the ruling Ba’ath Party in 1971, Hafez al-Assad began systematically favoring his own Alawite people, a practice continued by son Bashar.

They predictably show greater acumen in describing oppression of the Kurds under Arab nationalist rule in Syria, documenting how large numbers were systematically stripped of citizenship, and quoting one official who unsubtly referred to the country’s “Kurdish question” as a “malignant tumor.”

The authors detail the uprising in which the PYD took over Rojava in July 2012 — contrary to claims that the regime simply abandoned the territory. “The state had no substantial military force” when the uprising began, the authors admit, making for a quick victory. Still — it was an uprising.

The authors see little hope for unity between the PYD’s autonomous zone and Syria’s general (Arab-led) opposition. They dismiss the main opposition body, the Syrian National Council, as “dominated by the Muslim Brotherhood.”

The authors acknowledge Pentagon support for the PYD’s militia, the People’s Protection Units (YPG). But they emphasize that the United States did not recognize Rojava’s declaration of autonomy and “does not support the Rojava project politically.” They add that the United States “averts its eyes from the war crimes of the Turkish government in North Kurdistan.”

Like Tax, the authors cite the LCCs as having “ideas that are compatible with Democratic Autonomy.” But they see the Rojava zone as their ideal, concluding that its survival is “also the survival of hope for a free, communal life and a gender-liberated, ecological society.”

A similarly idealistic account is found in Struggles for Autonomy in Kurdistan, by authors Eliza Egret and Tom Anderson, who made trips to both Turkish Kurdistan (Bakur) and Rojava. Tracing the movement’s trajectory “from Marxism-Leninism to Democratic Confederalism,” they first detail the autonomous system in Bakur. Neighborhoods, towns, and provinces each have their own rebel assemblies, forming a system of parallel power. A similar council-based system now governs Rojava.

This book emphasizes the “culpability of the U.S.” in the counterinsurgency in Turkey’s east. For instance, the Turkish government used Lockheed Martin F-16 warplanes for airstrikes on the village of Roboski in December 2011 that left 34 residents dead. Other American, British, and Turkish arms companies are named as complicit in the repression.

These companies certainly deserve criticism. But the authors’ failure to express any outrage at the far greater Russian and Assad regime bombardment of civilians in Syria undermines their moral authority. They also fail to grapple with the reality that the Rojava Kurds are now being assisted by US warplanes.

Janet Biehl, the American writer and activist who translated Revolution in Rojava from the German, also translated an earlier account by the Hamburg-based TATORT Kurdistan (“Crime-scene Kurdistan”), Democratic Autonomy in North Kurdistan.

A report from a delegation to Turkey’s east, it also describes the system of dual power. It emphasizes the professed multi-ethnic character of the autonomous structures (with participation from minority peoples, such as the Qizilbash), and its repudiation of ethnic nationalism. Leaders of civil organizations are interviewed, such as the Peace Mothers, made up of mothers of Kurdish guerillas who have organized to press both sides for a political solution to the conflict. So are leaders of agricultural and light industrial collectives. One in the town of Colemerg is growing a local cucumber variety to make “resistance pickles.”

Biehl also contributes to an anthology on Rojava produced by an activist collective in New York, A Small Key Can Open a Large Door. This book also offers a discussion of the precarious role of the Kurds in the “Great Game” of geopolitics. Many foreign powers have sought to exploit the Kurds for their own aims, while “ultimately thwarting the Kurdish dream of freedom across a unified Kurdistan.”

The authors see US support for Rojava as “simply a matter of pragmatism.” They warn leftists in the West against the “essentialist” error of dismissing the Rojava movement because of this support, rather than understanding the pressures that have led the revolutionary Kurds to accept it.

The Small Key writers are clearly anarchist in their politics. They don’t try to impose their own ideology on the movement, but see the autonomous administration in Rojava as a “stateless government,” with a vision that “draws heavily from contemporary anarchist, feminist, and ecological thought.”

Janet Biehl was the longtime companion of Murray Bookchin before his death in 2006, and is today a torch-bearer for his theoretical legacy of “social ecology.” Bookchin initially styled himself as formulating a new anarchist movement for the post-industrial age, with an emphasis on community and harmony with the natural world. But late in life he repudiated anarchism for what he called “communalism” or “libertarian municipalism” (libertarian in its original sense of anti-authoritarian, definitely not its more contemporary sense of laissez-faire capitalist), which sees the municipality as the highest level at which direct self-government is possible.

The Next Revolution, a posthumously published collection of Bookchin’s late essays, makes clear that he sought to “replace the nation-state with a confederation of municipalities.” He still advanced a model in which decision-making power flows up from below. This can be seen as a kind of compromise between a pure anarchist position and a more pragmatic conception of power.

One essay explores a critical antecedent for such thinking — the anarchist uprising in Barcelona during the Spanish Civil War in 1936. Bookchin faults the anarchists for rejecting a seizure of power at a public plenum after the workers’ insurrection had crushed the fascist military rising of General Francisco Franco in the city. “If we are to learn anything from this crucial error,” Bookchin wrote, “it is that power cannot be abolished […] Power that is not in the hands of the masses must inevitably fall into the hands of their oppressors.”

The Rojava leadership clearly accepts this principle. But this opens the anarchist critique of power as inherently subject to abuse, even when delegated from below through an organic participatory process.

The idealistic views of Rojava are sharply contrasted by those of partisans of the general (Arab-led) Syrian revolution. Khiyana (Arabic for betrayal) is an anthology by supporters of the Syrian opposition movements, accusing large elements of the Western left of making a paradoxical peace with the fascistic Assad.

Such icons of the left as Julian Assange, Cynthia McKinney, Slavoj Žižek, and The Nation magazine are refreshingly lambasted for loaning propaganda cover to Assad’s regime and painting the opposition as monolithically jihadist. But some of the contributors — themselves mostly on the Marxist left — are contemptuous of both the Rojava revolution and its leftist supporters.

Sam Charles Hamad, for example, is dismissive of the perception (advanced by Tax) of Turkish state connivance with ISIS: “Daesh [ISIS] is not allied with Turkey but has declared war on it.”

Leila al-Shami has an open challenge for the leftists now mobilizing to support Rojava but remaining equivocal, uninterested, or hostile regarding the general Syrian revolution. Writing during the ISIS siege of Rojava, she asks

whether international solidarity for Kobani arises from the Kurdish ethnicity of its defenders (i.e. they’re not Sunni Arabs), from support for the political position of a party (the PYD/PKK), or from the principle that all people have the right to defend themselves from terror, whether in the form of religious or nationalist fascism, and to determine for themselves how to organize their lives and communities. If it arises from the latter principle, then the same solidarity extended to the Kurds must be extended to all revolutionary Syrians.

Conflict, Democratization, and the Kurds in the Middle East is an anthology exploring the interaction between Kurdish ethnic struggles and the pro-democracy movements in Turkey, Syria, Iraq, and Iran alike. Eva Savelsberg’s entry on Syria will make difficult reading for those enthused by the Rojava project. She portrays the PYD as an arm of the PKK that sees Turkey as the enemy and has sought “to prevent the Kurdish population from effectively participating in the revolution.” She dismisses talk of “federalism” and “democracy” as “buzzwords.” She mentions a disturbing 2013 incident at the Rojava town of Amuda, in which YPG fighters fired on protesters, leaving eight dead.

But other of Savelsberg’s claims may be dubious. She writes that Rojava’s constitution “has never been officially published” — yet it appears as an appendix in A Small Key. She concludes with arrogance: “[I]t is currently unrealistic to think that the Kurds will play any meaningful role in democratizing Syria — or even their own society.” This assessment is almost surreally at odds with the portrayals of Tax, Biehl, and fellow enthusiasts of the Rojava model.

The challenge for those wrestling with Syria’s Kurdish question is to seek a middle path between the cynicism of Savelsberg and the idealism of the Rojava experiment’s ideological proponents. It is more evident each day that the defeat of ISIS in northern Syria could only open an Arab-Kurdish ethnic war, which could also be exploited as a proxy war by regional rivals Turkey and Russia. This would not serve the interests of anyone but the jihadis, despots, and imperialists. It will take some honest grappling by the partisans on both sides in order to avoid it.

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