Wednesday, June 10, 2020

China’s rise and the legacy of Deng Xiaoping
Xi is haunted by the fall of the Soviet Union but his inflexible approach won't let new leaders adapt to change

By SAMO BURJA JUNE 9, 2020

Combination portrait of Chinese leader Xi Jinping and former leader Deng Xiaoping. Image: Facebook/Getty


American elites have woken up to Beijing’s threat to global US hegemony. Now questions about China and its institutions are on everyone’s mind. Will its economy continue to expand or will it stagnate? Exactly how communist is China anyway? How stable is the regime? In sum, where is China going?

To answer these vital questions, we must examine the origins of China’s current institutional and ideological structure, which was shaped primarily by Deng Xiaoping during his leadership of the country from about 1980 to 1992. Xi Jinping inherited this structure and has not fundamentally changed it.

The future of China will follow the tracks Deng set down, through a series of institutional reforms that enabled the country’s tremendous drive for growth. As the foundations of this reform decay, so will the growth, eventually leading China into stagnation unless another successful reform is undertaken, which neither Xi nor his successors appear capable of.

Deng had two key objectives in pursuing this growth: to ensure the survival of the communist regime and to improve China’s geopolitical position. He succeeded with honors on both counts, because he understood that achieving those two objectives required dealing with a key constraint: is it possible to open up trade without ceding power to the outside world? 

The political limits of trade

China’s history had shown that trade and subjugation can go hand in hand. Centuries earlier, the Ming dynasty broke trade agreements imposed by the Mongol leader Altan Khan, fearing that their gains would be outstripped by rising Mongol power. In doing so, they knew that a relative advantage is often more politically important than an absolute one. Deng knew this history well, and so his central concern was retaining sovereignty.


Scholars and decision makers today take the stability of the political system for granted and believe the market is more fundamental than other social infrastructure. In fact, the opposite is true. Societies need a large and very effective bureaucracy, either a military or a private one, to establish and maintain a market. If a government has to choose between growth and sustaining itself, it is perfectly happy to forgo growth altogether, as North Korea demonstrates today.
Over the long run, a stable society also needs live players to repair the institutions that enable markets. Every garden needs a fence, but even with a fence weeds can grow. Similarly, the market doesn’t maintain itself. It doesn’t correct for violations of market norms, like dishonest advertising or sabotaging competitors. The market mechanism is also bad at removing government distortions of various kinds. The government game isn’t made obsolete by the markets game.

Deng’s refounding

As a student of contemporary capitalism, Deng closely observed Singapore’s development, which showed that a culturally Chinese society had the prerequisite social technologies to productively use markets. Second, he understood that with the right trade approach China could maintain sovereignty and keep out American political influences.

Third, he solved the problem of ideological legitimacy. How do you bring about market reforms in a communist state? In this effort, Deng was helped by Party disillusionment with the Maoist approach to development and politics.

Part of this disillusionment came from the failure of Mao Zedong’s economic policies, but it had a deeper source. Mao was a better revolutionary than governor. Once in power, problems caused by his poor governance led to deadly contests with rising rivals such as Peng Dehuai and Liu Shaoqi.

After winning the Chinese Civil War, Mao was swamped by court politics and the simultaneous responsibility for handling China’s massive internal problems. The only way he could return to uncontested power was to carry out another revolution. The Cultural Revolution was Mao’s second revolution, intended to return him to a dominant position.

This ploy ultimately failed. In the early 1970s, Mao had a falling-out with his chosen successor and key deputy for the Cultural Revolution, Lin Biao, who allegedly attempted a coup and died under suspicious circumstances in 1971.

Afterward, Mao retreated into paranoid isolation. By his 1972 meeting with Richard Nixon and Henry Kissinger, Mao was little more than a prisoner in a golden cage. He had also become very dismissive of his ideological thinking, telling his visitors, “Those writings of mine aren’t anything. There is nothing instructive in what I wrote.”

To Nixon’s protest that “the Chairman’s writings moved a nation and have changed the world,” Mao responded, “I haven’t been able to change it. I’ve only been able to change a few places in the vicinity of Beijing.”

Deng saw the dysfunction in Josef Stalin’s and Mao’s regimes and concluded that the cult of personality was to blame. However, he didn’t pursue a policy similar to Nikita Khrushchev’s de-Stalinization, which he thought weakened the Soviet state. Rather than demonize Mao, he merely allowed the clear failures of the party to work in his favor, and made it clear that Mao’s misguided strategies would not be repeated.


Deng simultaneously refounded the Communist Party of China’s principles of succession. He proposed rotating leadership, so that the most ambitious party officials would have an opportunity to change the party’s dominant ideological and policy position. He also proposed a generational theory of government – that every generation should get a chance at the helm of the country. These changes lessened intra-party conflict, allowing the CPC to turn its energies towards expansion.

Xi’s China

Xi Jinping came of age during Deng’s reforms and witnessed the collapse of the Soviet Union. These two experiences profoundly shaped his world view. Xi is haunted by the collapse of the Soviet Union as much as Russian President Vladimir Putin, who called it “the greatest geopolitical catastrophe of the century.”

A similar fall from power would likely result in a potentially violent fragmentation of the country, hence Xi’s focus on preventing China’s peripheral provinces, like Tibet and Xinjiang, from breaking away. These are parts of the country with a low population and bad logistics, where it would be easy to supply weaponry. Xinjiang could easily become China’s Afghanistan.

The New York Times recently published documents apparently showing that the oppressive policies in Xinjiang are in fact coming from the top down, rather than the bottom-up initiative of local administrators, and this is why – stability at any price. In fact, CPC officials sometimes object to these directives and are subject to disciplinary measures.

Xi is trying to circumvent normal controls established by Deng because he believes that, without such circumvention, ideological failure is inevitable, and it is this failure that represents the greatest threat to the CPC.

In a 2013 speech to China’s National Congress, he highlighted the Soviet Union’s failure to compete ideologically as the cause of its collapse. Key Soviet officials were ideologically demoralized. Without belief in Marxism, they were not motivated to sustain it actively, only passively. The machinery of state became brittle, first cracking rather than bending under strain. Xi blames Western intellectual subversion for this ideological failure. He is determined not to let China suffer the same fate.

Xi has suppressed any dissent from this interpretation, at the same time doubling down on improving Marxist education. One of the problems he faces is that, rather unsurprisingly, when young people study Marxism they tend to decide that they need to organize unions and fight the central government.

The ideology on which the Communist Party is built, when applied, gives a blueprint for local troublemaking and revolutionary activity. This is the fundamental problem of revolutionary ideologies. The methods to get you into government are not necessarily the methods that result in good government.

A future of stagnation

The continued success of China under Xi stems from his continuity with Deng and his deep appreciation for the country’s fragility. However, I see no evidence that the generation of leaders after Xi retains this knowledge or strong motivation, so I expect a succession failure.

Xi has made the CPC more closed for people with his skill and ambition who might be concerned for the future of the party. There is less generational cycling and fewer opportunities to dissent from the center. It has become commonplace for rising or independent players, whether truly guilty or truly innocent, to be crushed through engineered corruption scandals.

Moreover, Xi has no known protege to be his successor. This means that after Xi leaves office the government either will be in bureaucratic autopilot or undergo a revolution.

It is also possible that a capable successor emerges as a surprise, as happened with Vladimir Putin’s ascent to the Russian presidency, but I think the former is far more likely. If so, about 20 years after Xi leaves office, China will enter a period of stagnation like that in the contemporary US, which will continue until the regime is sufficiently withered that a major reform is attempted.

Given China’s strict bureaucracy and high degree of technological sophistication, it may well take a century after Xi’s departure before a reform is possible. The contemporary US period of stagnation has lasted for about 50 years since the 1970s, with no clear end in sight.

America was a lot less bureaucratically and technologically sophisticated than modern China when it entered this period of stagnation. If a future reform fails it could, like Mikhail Gorbachev’s reforms, lead to state collapse.


SAMO BURJA

Samo Burja is the founder of Bismarck Analysis, a consulting firm that investigates the political and institutional landscape of society. He is a research fellow at the Long Now Foundation and a senior research fellow in political science at the Foresight Institute. You can follow him on Twitter @samoburja. More by Samo Burja

How has COVID-19 affected the gig economy?

economy
Credit: CC0 Public Domain
The arrival of the novel coronavirus and subsequent shutdowns of economies across the globe have caused hardships not seen in generations. But for business professors, it's also a once-in-a-generation research opportunity.
USC Marshall Assistant Professor of Marketing and Kenneth King Stonier Assistant Professor of Business Administration Davide Proserpio was one of the first academics to study the sharing economy as he completed his Ph.D. Today he is considered a leading expert in the so-called "gig" economy. We asked him five questions about how the COVID-19  and resultant shutdown are affecting the sector.
Q: Describe your expertise with researching the "gig" economy? How did you get interested? Can you point to interesting findings from your research?
I started working on the topic of the sharing economy during my second year as a Ph.D. student (2012). At the time, Airbnb was still a small and not very popular startup, and I started using it both as a traveler (a guest) and a host (I was a host for almost three years in Cambridge, Massachusetts). Noticing the fast pace at which it was growing, we (my advisor and another Ph.D. student) decided to start collecting data from the platform, because it represented a new business model, and we thought we could find an interesting research question to study.
After a few months of data collection and some analyses that ended up with nothing concrete, we decided to study whether Airbnb had an impact on the . It seemed such a natural question to study, and we were surprised (and happy) to find no research on the topic.
We started analyzing Airbnb and hotel data at the beginning of 2013, and we had a draft of our first paper on the sharing economy by the end of 2013. In it, we analyze Airbnb's entry into the state of Texas. We estimated that in Austin, where Airbnb supply was the highest, the causal impact on hotel revenue was in the 8 to 10% range; moreover, we showed that the impact of Airbnb was non-uniform, with lower-priced hotels and those hotels not catering to business travelers being the most affected. We were among the first academics studying the sharing economy, and today this paper is my most cited work.
Q: Uber, Airbnb, all are taking ugly hits. What will these businesses have to do to survive the pandemic...and future ones?
Companies like Uber and Airbnb had to react very quickly to the changes imposed by the current pandemic. They all tried to implement changes aimed at ensuring user safety so that people would continue to use their services. However, despite these changes, the lockdown imposed in many cities around the world made some of these services very hard, if not impossible, to use.
One of the industries most affected by the pandemic is the travel industry, which directly affected short-term rental companies like Airbnb. Improving safety measures did not help in this case because most people on lockdown are not allowed to travel these days, so many Airbnb hosts converted their properties to long-term rentals, where risks associated with infections are considered much lower and where there is still demand (despite the pandemic, people need a place to live).
However, there is a problem with this switch: the long-term rental market is likely to be less profitable than the short-term. This means the move to the long-term rental market might be just a short-term effect of the pandemic, because many hosts may have the capital to survive a couple of months earning less revenue. However, if conditions don't improve soon, many hosts—especially those that are financially constrained—may be forced to sell their properties, and this could put Airbnb in a difficult position.
Q: If such companies are forced to change their business models to to be more employee-friendly (sick leave, health care, higher wages, etc.), what changes then ripple out into the larger economy?
This is an interesting question. I think more and more people might decide to participate in this economy so we might see an increase in substitution between traditional 9-to-5 jobs and gig work. In turn, this might lead to the disappearance of certain types of jobs that require low to no skills.
Competition between the sharing economy and incumbents might also become stronger, so whether incumbents will survey this type of change is hard to predict; for example, if Uber drivers get the same benefits of a traditional taxi driver, the motivations to participate in the traditional economy may decrease substantially.
Q: What's the silver lining here? For investors? Employees?
Employees might end up getting better working conditions and benefits. This is because sharing economy companies need to step up and guarantee their workers safer conditions and likely better benefits if they want to survive and, hopefully, recover fast once the pandemic is over (these companies need people willing to work for them once the pandemic is over).
The pandemic exposed the weaknesses of the sharing , and investors have seen how fragile many of these companies are, so they probably are wondering whether their investments are going to end up being a bad decision.
Q: Does this pandemic portend the end for the gig economy? If not, what does a gig economy look like, circa 2025, in your thinking?
Some platforms that are not very popular may disappear, but the whole concept of the  will survive along with the best players, such as Uber and Airbnb. The pandemic reminded these companies that without their users, they are not worth a penny. So I hope that this will fundamentally change the way they are treating their workers.Airbnb to offer housing to 100,000 crisis responders

Unfavourable attitudes toward genetically modified food predict negative feelings about other food technologies

food
Credit: CC0 Public Domain
Scientists at Nanyang Technological University, Singapore (NTU Singapore) and the Harvard T. H. Chan School of Public Health (HSPH) have found that people who hold negative opinions of genetically-modified (GM) food are likely to feel the same about nano-enabled food—food with nano-additives to enhance flavour, nutrition or prolong shelf life.
In a survey of 1,000 respondents led by NTU comprising adult Singaporeans and permanent residents, close to a third found GM  unappealing, and their negative feelings influenced how they viewed nano-enabled food. Over a third felt neutral about GM food, while the remaining respondents welcomed it.
While the study focused specifically on reactions towards nano-enabled foods, lead investigator and NTU Associate Professor Shirley Ho said that the "spillover effect" they observed from GM food to nano-enabled food could possibly extend to other novel food technologies as well, given that mental associations that people make between similar technologies have shown to influence their behaviour towards a newer technology. This represents a cause for concern for policy makers as Singapore invests in  and technology as one of its strategies to bolster food security.
With the COVID-19 outbreak extending into the second quarter of the year, the Food and Agriculture Organisation of the United Nations has warned of global disruption in food supply brought about by movement restrictions and border controls in a protracted crisis.
The global pandemic has thrust the issue of food security and the necessity to explore cutting edge research in novel food technologies into the spotlight, said Assoc Prof Ho of NTU's Wee Kim Wee School of Communication and Information.
"The COVID-19 pandemic has highlighted the importance of  for a small country like Singapore, which imports more than 90 percent of its food consumed in the country. We don't have the problem of disrupted  yet, but we have to anticipate the possibility," said Assoc Prof Ho.
"Our study is a timely examination of the public's reactions towards novel food technologies. We may soon be able to make food last longer with the help of science, or dine on lab-cultured meat, but all these would be futile if a sizeable group of people reject these new food innovations."
"This study highlights the challenge in communicating safety of new food technologies as innovations advance to meet global food needs for a growing world population," added Dr. K. Viswanath, Lee Kum Kee Professor of Health Communication at Harvard T.H. Chan School of Public Health and a co-author on the paper.
The study was published in the Journal of Communication on 5 June.
Tech-enabled food doesn't go down well with some Singaporeans
To study public opinion on engineered food, the NTU-Harvard team first surveyed 1,000 Singapore citizens and permanent residents on their thoughts on GM food—for example, asking whether they consider it to be delightful, nutritious, fresh and appealing.
Close to a third, or 305 respondents, showed unfavourable attitudes towards GM food.
The team then investigated how the respondents' pre-existing attitudes towards GM food affected their feelings about nano-enabled food, and found that those who had unfavourable attitudes towards GM food were also unfavourable about nano-enabled food—what the scientists called a spillover effect.
The scientists also found that participants who were unfavourable towards technology-enabled food may not be swayed to do the same after watching others eat this food.
Assoc Prof Ho, who is also NTU's Research Director for Arts, Humanities, Education and Social Sciences, explained: "This spillover effect could potentially be due to a general rejection of technology-enabled food and other notions associated with it. The mental associations that people make between similar technologies may influence their behaviours toward a newer technology. This is especially so in cases where the technology from which people draw cues is socially contestable."
Coronavirus pandemic worsens food insecurity for low-income adults

More information: Past debates, fresh impact on nano-enabled food: A multi-group comparison of presumed media influence model based on spillover effects of attitude toward genetically-modified food, Journal of Communication. Publisher: Oxford University Press, DOI: 10.1093/joc/jqaa019
Journal information: Journal of Communication 

Tuesday, June 09, 2020

Fishers are one of the poorest professions in Indonesia, yet they are one of the happiest

Fishers are one of the poorest professions in Indonesia, yet they are one of the happiest
Statistics show a sharp decline in the number of fisher households from 2 million in 2000 to just 966,000 in 2016. Credit: Shutterstock
Indonesia's status as a maritime country seemingly does not guarantee that its fishers live prosperously. My recent study, analysing data from the 2017 National Socioeconomic Survey (SUSENAS), shows fishers are one of the poorest professions in Indonesia.
As many as 11.34% of people in Indonesia's fisheries sector are classified as poor. That's a higher rate than in other sectors such as restaurant services (5.56%), building construction (9.86%) and waste sorting (9.62%).
As a result, the number of young people who want to work as  has declined. Data from the Indonesian Statistics Bureau (BPS) show a sharp decrease in households involved in capture fisheries, from 2 million in 2000 to 966,000 in 2016.
This has occurred not only in Indonesia but also in other parts of the world. In 2016, the Food and Agriculture Organisation (FAO) reported a continuous decline of workers in the capture fisheries sector. In Europe, the number of fishers fell from 779,000 to 413,00 between 2000 and 2013. A similar trend can be seen in North America and Oceania.
Policies that limit overfishing, along with the advancement of technologies that replace the role of fishers, seem to be the cause of this decline.
A number of scholars argue that low income, extreme weather at sea and being far away from family for a long time have turned the profession into one that is dangerous and unattractive.
However, research I conducted in 2018 found this does not apply to Indonesian fishers. Amid poverty and uncertainty about catches, Indonesian fishers seem to be happier than other professions in the agriculture sector.
Fishers are one of the poorest professions in Indonesia, yet they are one of the happiest
Examples of survey question on subjective well-being from the IFLS questionnaire. Credit: Anna, et al. 2018
Measuring the happiness of fishers
Our team conducted a statistical analysis of the welfare status of fishers, represented by socioeconomic data from the 2012 and 2015 Indonesian Family Life Survey (IFLS).
The IFLS questionnaire also contained an open survey for fishers, asking them how happy they felt or would feel at present, five years ago and five years ahead.
Even though they are one of the most likely to slide under the poverty line, our analysis concludes there is no strong evidence that fishers are less happy than those in other professions.
Instead, many other aspects displayed a stronger correlation to happiness rather than just their status as fishers—such as education level, marriage status and health condition.
One reason that might explain this result is the nature of their profession, which allows them to enjoy more time outdoors, on the open sea.
Past studies suggest aspects such as "adventure", "freedom" and "activities in nature" act as a form of therapy for fishers.
Fishers are one of the poorest professions in Indonesia, yet they are one of the happiest
The open sea can be a form of therapy for fishers. Credit: Shutterstock
For instance, research from the University of Rhode Island found roaming in calm seas helped fishers in the Caribbean—such as those in Cuba and Haiti—develop very good social relations and a healthy mental state.
Another study, by researchers at East Carolina University in the United States, describes how many former fishers in Puerto Rico chose to return to work in the open sea as a form of therapy after feeling exhausted by years spent in administrative jobs.
Particularly for Indonesian fishers who employ workers, this "therapy" seems to have a stronger effect as they have to work less and can spend more time enjoying nature.
In our survey, fishers also showed higher optimism than other professions in the agriculture sector about their projected economic situation in five years' time.
The above factors might explain why, even in poverty, Indonesian fishers still perceive their living conditions as being on par with other professions, perhaps even one that is worth pursuing for years to come.
The future of the fishery sector
However happy Indonesian fishers are, statistics still show fewer and fewer people are choosing fisheries as a profession.
Fishers are one of the poorest professions in Indonesia, yet they are one of the happiest
Without small-scale fisheries protection, fishing vessels from large industries (more than 10 GT) can reduce the income of traditional fishers. Credit: Shutterstock
This means the government has the important task of increasing the welfare of fishers for the sake of this profession's future.
One thing the government can do is issue better regulations for open-access capture fisheries and policies to protect small-scale fishers.
If the government fails to pay attention to this, large fishing vessels will continue to exploit Indonesian waters, which ultimately reduces the catch of traditional fishers.
Government support to increase fishers' welfare—for instance, by providing insurance for small-scale fishers – is also a must for this highly uncertain profession.
Being a fisher might be a happy job, but it would be meaningless if no one is left to continue this profession in the future.
How small-scale fishers are struggling amid COVID-19 crisis
Provided by The Conversation 
This article is republished from The Conversation under a Creative Commons license. Read the original article.The Conversation

2019 fossil fuel subsidies nearly $500 bn: OECD/IEA

Combined subsidies for both consumption and production last year totalled $478 billion in 77 economies
Combined subsidies for both consumption and production last year totalled $478 billion in 77 economies
Climate crisis notwithstanding, governments subsidised fossil fuels in 2019 to the tune of nearly half-a-trillion dollars, two intergovernmental agencies have jointly reported.
Subsidies for  alone declined $120 billion, or 27 percent, compared to 2018 due mainly to lower oil and , according to International Energy Agency (IEA) figures.
Governments that heavily support the use of oil and gas include Iran, Saudi Arabia, China, Russia, Indonesia, Egypt, India and Venezuela.
At the same time, subsidies for fossil fuel production—in the form of cash, tax breaks and other credits—increased across 44 rich and emerging economies in 2019 by 38 percent to $55 billion, the Organisation for Economic Co-operation and Development (OECD) reported.
Combined subsidies for both consumption and production last year totalled $478 billion in 77 economies, an 18 percent drop compared to the year before, the IEA and OECD said in a joint statement, released at the end of last week.
"The fiscal burden of subsidies means that fewer resources can be potentially devoted to other , be it for clean-energy research, innovation or to strengthen social safety nets," Nathalie Girouard, head of the OECD's environmental performance and information division, told AFP.
Burning oil, gas and coal—which account for more than 80 percent of global primary energy use—is the main source of the greenhouse gases that drive global warming.
Governments have long recognised the need to stop propping up fossil fuel production and use.
As early as 2009, G20 nations responsible for 80 percent of CO2 emissions pledged to gradually eliminate fossil fuel subsidies.
So far, however, they have failed to deliver on that promise.
"Today's low fossil fuel prices offer countries a golden opportunity to phase out consumption subsidies," says IEA hea
"I am saddened to see some backsliding on efforts to phase out fossil fuel support," OECD Secretary-General Angel Gurria said in a statement.
"Subsidising  is an inefficient use of public money and serves to worsen greenhouse emissions and air pollution."
'Golden opportunity'
Business leaders have also flagged the need to stop bankrolling the production and use of oil, gas and their derivatives.
In December, 631 institutional investors managing more than $37 trillion in assets endorsed the Paris climate treaty goal of capping global warming at two degrees Celsius and called on governments to "phase out fossil fuel subsidies by set deadlines".
With oil, gas and coal prices dropping through the floor due to COVID lockdowns in the first part of 2020, governments need to support the energy needs of their least advantaged citizens while channelling the money freed up into a greener economy, said IEA Executive Director Fatih Birol.
"Today's low fossil fuel prices offer countries a golden opportunity to phase out consumption subsidies," he said.
"It is essential to avoid market distortions that favour polluting and inefficient technologies."
Burning fossil fuels causes some 4.5 million premature deaths each year, according to the Centre for Research on Energy and Clean Air.
"Many subsidies are poorly targeted, disproportionally benefiting wealthier segments of the population that use much more of the subsidised ," IEA energy analysts Wataru Matsumura and Zakia Adam wrote in a blog last year.
"Such untargeted  policies encourage wasteful consumption, pushing up emissions and straining government budgets."
Axing fossil fuel subsidies scant help on climate: study

© 2020 AFP

Radiocarbon dating pins date for construction of Uyghur complex to the year 777

Radiocarbon dating pins date for construction of Uyghur complex to the year 777
Aerial view of Por-Bajin from the west. The complex is situated on an island in a lake. Scientists have pinned its construction on the year 777 CE, using a special carbon-14 dating technique, based on sudden spikes in the carbon-14 concentration. Credit: Andrei Panin
Dating archeological objects precisely is difficult, even when using techniques such as radiocarbon dating. Using a recently developed method based on the presence of sudden spikes in carbon-14 concentration, scientists at the University of Groningen, together with Russian colleagues, have pinned the date for the construction of an eighth-century complex in southern Siberia to a specific year. This allows archeologists to finally understand the purpose for building the complex—and why it was never used. The results were published in Proceedings of the National Academy of Sciences on 8 June.
The Por-Bajin complex, on the border of the Russian Federation and Mongolia, measures 215 x 162 meters and has outer walls of 12 meters high. All of the walls are made of clay (Por-Bajin translates as 'clay house') on a foundation of wooden beams. The complex was created by nomadic Uyghurs sometime in the eighth century. But archeologists did not know the purpose of the complex and why it appears never to have been used.
Khans
"In order to understand this, the exact construction date was required to find out which local leader, or khan, gave the orders for the construction," explains Margot Kuitems, a postdoctoral researcher at the Centre for Isotope Research at the University of Groningen. She currently works on the Exact Chronology of Early Societies (ECHOES) project, funded by the European Research Council and led by Assistant Professor of Isotope Chronology Michael Dee, who is also an author on the PNAS paper.
For the early medieval period, radiocarbon dating is generally precise to within a few decades. This is good enough for most applications. However, as khans came and went during the eighth century, the exact construction date was required to link it to a specific leader. Within the ECHOES project, Kuitems applied a recently developed method to date her samples exactly.
Spike
Carbon-14 (a radioactive isotope of carbon) is created in the upper atmosphere. Plants absorb , which includes a tiny amount of carbon-14. When the plant—or the animal that ate the plant—dies, the carbon uptake stops and the carbon-14 slowly decays. Every 5,730 years, half of the carbon-14 decays. Therefore, the carbon-14 concentration reveals the age of the object (animal, plant or any other organic material).
Production rates of carbon-14 in the atmosphere are not constant. However, changes in atmospheric carbon-14 were believed to show little variation from one year to the next. Then, in 2013, the Japanese Professor Fusa Miyake analyzed individual tree rings and found a spectacular spike in carbon-14 content in the year 775. "When you find wood at an archeological site from that period, you can look for the spike by measuring the carbon-14 content of subsequent tree rings," explains Kuitems. The spike tells you which tree ring grew in the year 775. And when the sample includes the bark, it is even possible to determine when the tree was felled.
Radiocarbon dating pins date for construction of Uyghur complex to the year 777
A microscope image of the outermost tree rings in a beam from Por-Bajin. For the last ring, the tree only formed early wood (darker bands; lighter bands are late wood). The carbon-14 spike was discovered in the 3rd ring from the bark. Credit: Petra Doeve
Chinese princess
This approach was used to analyze a beam taken from the very foundation of the Por-Bajin complex. The sample that they used had 45 rings, followed by the bark. Measurements showed that the spike that dated to the year 775 was present in the 43rd ring. "So, we knew the tree was felled in 777. Tree ring specialist and co-author Petra Doeve determined that the final, partial ring was created in the spring." In southern Siberia, there is a clear distinction between summer and winter wood.
Russian archeologists previously reported that the entire complex was completed in a very short time, about two years. Por-Bajin is situated on an island in a lake and it was determined that the trees came from the surrounding area. "We are fairly certain that they were felled for the construction of the complex, and it is therefore highly likely that construction took place around 777."
Previously, the site had been dated to 750, based on a runic inscription on a monument called the "Selenga Stone," which described the construction of a large complex. In 750, Bayan-Chur Khan ruled the Uyghurs. He was married to a Chinese princess and this may explain why some Chinese influences were found in the Por-Bajin complex. "However, previous radiocarbon dating attempts already suggested that the buildings might be slightly younger."
Manichaeism
In the year 777, Tengri Bögü Khan was in charge. He had converted to Manichaeism, a gnostic religion that was strongly opposed. Indeed, Bögü Khan was killed during an anti-Manichaean rebellion in 779. "All this ties in neatly with the archeological evidence," explains Kuitems. It is likely that the complex was built to serve as a Manichaean monastery. "This explains why it was never used after the anti-Manichaeans defeated Bögü Khan. If it had been a palace or a fortress, it is more likely that the victors would have moved in."
The study shows how carbon-14 spikes can help to solve archeological conundrums, says Kuitems: "This technology can be really useful in cases where an exact date is required." And as ever more spikes are identified, their uses will become more widespread.Tree rings could pin down Thera volcano eruption date

More information: Margot Kuitems el al., "Radiocarbon-based approach capable of subannual precision resolves the origins of the site of Por-Bajin," PNAS (2020). www.pnas.org/cgi/doi/10.1073/pnas.1921301117
Provided by University of Groningen 

Invasive rushes spreading in upland farm fields

Invasive rushes spreading in upland farm fields
Credit: University of Liverpool
A new study involving University of Liverpool ecologists shows invasive native species of rushes are spreading across UK upland farms and have the potential to threaten wildlife and the livelihoods of farmers.
Researchers used a series of Google Earth images to plot the spread of rushes in farm fields in the West Pennine Moor SSSI—an area of the Lancashire uplands between Bolton, Bury and Darwen.
The study is the first to investigate the spread of rushes in areas of the UK uplands. Although the study focused on one area of upland, anecdotal evidence suggests the problem could be happening across many other UK hill farms.
Using more than 200 images from Google Earth taken across a 13-year period between 2005 and 2018, the researchers found that rushes have spread across the surveyed area by between 82 percent and 174 percent.
Rushes, which are much taller than typical pasture grasses and tend to grow in tussocks, can be identified on color aerial photography, such as Google Earth images, because of their different color and growth form to surrounding grasses.
The spread of rushes in upland farmland is of growing importance because it has the potential to reduce the productivity of land for farmers—as livestock, like sheep, find it unpalatable.
Its spread is also problematic for wildlife as many , such as lapwing and redshank, do not like to breed in fields dominated by rushes.
The researchers also suspect that rushes, as a combustible material, could potentially increase the risk of moorland wildfires.
Dr. Mark Ashby, of Lancaster University and lead author of the study, said: "Our study corroborates the anecdotal reports suggesting that populations of tussock-forming rushes, such as soft rush, hard rush, and compact rush, have been increasing within upland grasslands.
"As they replace palatable grasses, rushes reduce grassland productivity. This can cause considerable losses to upland farm incomes on land where, owing to poorer soils and climate, it is already difficult to make a living. From a wildlife perspective, important upland birds, such as redshank and lapwing, choose not to breed in fields dominated by rushes."
Professor Rob Marrs from the University of Liverpool's School of Environmental Sciences provided his forty-year experience of weed control in the uplands and the interpretation of aerial photography to guide this study.
He said: "We all suspected that that soft rushes were increasing and reducing available grazing land (ask any upland farmer) but we had no idea about how big a problem it had become. The next phase of this work should be do similar studies in other areas to get a national perspective, but there is also a need for experimental work to derive sensible, cost-effective weed control strategies."
Rushes, which are native to the UK, are spreading perennials that prefer wet, acidic and nutrient-poor environments. They can vigorously reproduce, with each stand producing millions of seeds and seeds can remain dormant in the soil for up to 60 years.
It is not known why rushes are spreading. Researchers think it could be due to a number of possibilities, including:
  • Inadequate field drainage and localized soil compaction.
  • Changes in farming practices over recent decades such as reductions in the numbers of people working the land, heavier farm machinery and changes in livestock types and densities.
  • Climatic reasons such as increasingly wet summers and winters and fewer frosts than in previous decades.
Dr. Mark Ashby added: "Determining the drivers of upland grassland rush expansion will help us understand how it can be halted or, in some cases, reversed, which would be of great benefit to hill farmers and upland biodiversity."
As the most effective way of controlling rushes is not known, the researchers believe more research is needed to find out more about the reasons why they are spreading across our uplands so a way can be found to bring them under control.
The study is outlined in the paper "Quantifying the recent expansion of native invasive rush species in a UK upland environment," which has been published by the journal Annals of Applied Biology.
Upland sheep grazing impacts biodiveristy and will take decades to recover


Women still an afterthought in research

by Northwestern University


COVID-19 impacts men more seriously than women, critical information that resulted from research examining how the virus progresses differently based on sex.

But including sex as a variable in scientific research has been historically rare, leading to dangerous gaps in understanding how diseases, drugs and vaccines impact men and women differently.

A new Northwestern Medicine study, published June 9 in the journal eLife, has found females are still an afterthought in most scientific research.

The study is a 10-year follow-up to a 2009 groundbreaking study that found females were left out of biomedical research because of how their hormones might skew fragile study designs, an idea that has repeatedly been proven false. That left only male subjects to represent both men and women in research findings.

Over the past decade, there have been numerous efforts to increase the representation of females as research subjects, including a 2016 policy by the National Institutes of Health (NIH) requiring scientists to "consider sex as a biological variable" in order to receive NIH grant funding.

Today, Northwestern investigators have discovered while scientists are increasingly including females in their research, they're still not breaking down their findings by sex.

"The implications of not analyzing research data by sex are endless," said Nicole Woitowich, associate director of the Women's Health Research Institute and research assistant professor at Northwestern University Feinberg School of Medicine. "Without this, we have no way of telling if or how new drugs and therapies may work differently in men and women. It hinders progress toward personalized medicine and it also makes it difficult for scientists to repeat studies and build upon prior knowledge."

The study authors analyzed more than 700 scientific articles across nine biological disciplines in order to determine if a sex bias still exists within biomedical research. They recorded if each study used male, female or both sexes and whether or not they reported and analyzed data by sex. They also recorded if scientists provided a reason for single-sex studies or for why they did not analyze data by sex.

The number of studies to include both male and female subjects increased from 28% in 2009 to 49% in 2019, the new study found, but there was no increase in the number of studies to analyze data by sex between 2009 and 2019.

In some cases, scientists did not provide an exact number of the males and females studied, the report found. And only 4% of published papers provided a reason why they did not use both sexes or why they failed to analyze data by sex. Of those, many claimed to use only males in order to limit the influence of female hormones.

Not analyzing data by sex might lead scientists to have to make assumptions based on the missing information, which requires additional time, resources and ultimately taxpayer-funded research dollars, Woitowich said.

"When we fail to consider the influences of sex in biomedical research, it's like we're trying to put together a puzzle without all the pieces," Woitowich said. "In order for us to improve our understanding of health and disease, it is essential that we include both sexes in research studies and analyze data accordingly."


Explore furtherNo female mice? Scientists may still approve NIH grant
More information: Nicole C Woitowich et al. A 10-year follow-up study of sex inclusion in the biological sciences, eLife (2020). DOI: 10.7554/eLife.56344
Journal information: eLife