Thursday, September 04, 2025

 

Study highlights cultural differences in parenting and reveals that how babies are soothed matters more than how fast




Durham University
Image1 

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A scene from the research team’s naturalistic video observations in the UK.

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Credit: Durham University





Researchers observed mother–infant interactions in urban UK and rural Ugandan communities, focussing on how mothers soothed their babies following naturally occurring episodes of distress. 

They found that although the UK mothers responded to their babies' distress more quickly, Ugandan infants actually recovered faster. 

This challenges long-standing assumptions rooted in Western models of parenting by showing that maternal promptness is not the only factor influencing how infants manage their emotions. 

Instead, the type of soothing behaviour used, which is shaped by cultural context, may play a key role in helping babies regulate distress. 

While both UK and Ugandan mothers soothed their babies at 3 months with tactile contact, like breastfeeding, UK mothers tended to use more verbal reassurance and less tactile contact as babies grew older.  

By comparison, Ugandan mothers were more likely to rely on tactile strategies, particularly breastfeeding, even with older infants.  

The research has been published in the journal Developmental Psychology. 

It was led by Dr Carlo Vreden of the DIPF Leibniz Institute for Research and Information in Education, Germany, and Professor Zanna Clay of the Department of Psychology, Durham University, UK. 

Dr Vreden said: “Our findings show that maternal responsiveness is universally important. 

“But how mothers respond, and the effectiveness of their strategies, varies in meaningful ways between cultures.  

“Importantly, we are not making value judgments about which approach is better. 

“Rather, we are highlighting that caregiving strategies are shaped by culture. 

“It is not just about how quickly the mothers respond to their babies, but also the type of maternal soothing response which plays a crucial role in infant emotion regulation.”  

Researchers analysed 147 naturally occurring episodes of infant distress involving 82 infants aged three and six months.  

In both countries, infants recovered more quickly when mothers responded faster.  

But notably, Ugandan mothers - who tended to respond more slowly - soothed their infants more effectively using tactile strategies, like breastfeeding, leading to quicker recovery. 

This effect appears to stem from cultural differences in caregiving style and suggests that soothing methods may be more influential than speed of response alone. 

Professor Clay said: “Most of what we know about babies’ early emotional development is based on studies conducted in Europe and North America. 

“But of course, these Western settings don’t reflect the caregiving environments experienced by the majority of infants around the world, nor how they may have been historically.  

“We wanted to explore how maternal sensitivity plays out in a more diverse global context. 

“Uganda is an interesting place to study caregiving, as infants are typically cared for multiple different caregivers and their styles of caregiving culturally differ, such as prioritising more physical contact with their babies.” 

Unlike controlled lab settings or surveys, the observations in this study reflect genuine, everyday spontaneous parent–infant interactions. 

The researchers hope these insights will inform more culturally inclusive approaches to parenting support and early intervention. 

Professor Clay said: “Our study also highlights the balance between responding to your baby while also having to manage daily tasks, which can be more challenging in rural low-resource setting 

“For example, we think one of the reasons the Ugandan mothers may have reacted slower is that they were often engaged in outdoor physical work such as tending to crops.” 

Dr Vreden said: “We’ve shown that Western ideas about optimal parenting don’t always apply in other settings. 

“Even though the UK mums do seem to follow this sort of gold standard of responding as soon as possible, it's the Ugandan children who don't get that quicker response who actually recovered faster. 

“This emphasises the complexity of different strategies working in different ways and in different settings.” 

The researchers say that further work in this field could include experimental studies to isolate the effects of specific maternal behaviours, expanding the study across more cultural contexts, and exploring how early caregiving influences children’s emotional development later in life. 

The study was funded by the European Research Council. 

ENDS 

Media information  

Dr Carlo Vreden of the DIPF Leibniz Institute for Research and Information in Education and Professor Zanna Clay of Durham University’s Department of Psychology are available for interview. 

They can be contacted at c.vreden@dipf.de and zanna.e.clay@durham.ac.uk respectively. 

For more information, please contact Durham University Communications Office on communications.team@durham.ac.uk  or +44(0)191 334 8623.     

The research was a collaboration between Durham University, UK, the University of York, UK and Budongo Conservation Research Station, Uganda. 

Source Information 

The fully study ‘Maternal Responsiveness to Infant Distress: A Cross-Cultural Investigation in Uganda and the United Kingdom’ is published in the journal Developmental Psychology

It will be available via the following DOI link after the embargo lifts: https://doi.org/10.1037/dev0002038                                                                                

Images  

A selection of images can be downloaded from the following link: https://bit.ly/3Hk8DnM 

Captions  

Image1: A scene from the research team’s naturalistic video observations in the UK. 

Image2: A scene from the research team’s naturalistic video observations in rural Uganda. 

Image3: A Ugandan field assistant filming a mother-infant interaction. 

Image4: A typical home at the rural Ugandan field site. 

A scene from the research team’s naturalistic video observations in rural Uganda

A Ugandan field assistant filming a mother-infant interaction


A typical home at the rural Ugandan field site

Credit

Durham University

 

Tackling new pollutants in China: A comprehensive review of current status, knowledge gaps, and strategic recommendations



Charting a path forward for environmental and public health protection




Biochar Editorial Office, Shenyang Agricultural University

Addressing the challenges of new pollutants in China: current status, knowledge gaps, and strategic recommendations 

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Addressing the challenges of new pollutants in China: current status, knowledge gaps, and strategic recommendations

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Credit: Jian Xu, Xiaoli Zhao, Xiaowei Jin, Jianqiang Sun, Ruonan Guo and Fengchang Wu*






As China continues its rapid development, the emergence of new pollutants poses significant challenges to environmental sustainability and public health. A new study titled "Addressing the Challenges of New Pollutants in China: Current Status, Knowledge Gaps, and Strategic Recommendations" provides a comprehensive overview of the current state of new pollutants, identifies critical knowledge gaps, and offers strategic recommendations for effective pollution control and risk management.

New pollutants, including microplastics, emerging contaminants, and novel chemical compounds, are increasingly detected in the environment. These pollutants can have complex and long-term impacts on ecosystems and human health. Understanding and managing these new pollutants is crucial for China's ongoing efforts to achieve sustainable development and protect public health.

The study offers a detailed analysis of the current status of new pollutants in China, highlighting the latest findings and trends. It examines the existing analytical methods and risk assessment frameworks used to detect and evaluate these pollutants. The research also identifies significant knowledge gaps, particularly in understanding the long-term environmental and health impacts of new pollutants.

The study reveals several key findings and strategic recommendations:

  • Current Status: New pollutants are increasingly detected in various environmental media, including water, soil, and air. The study highlights the need for improved monitoring and data collection to better understand their distribution and impacts.
  • Knowledge Gaps: Significant gaps remain in the understanding of the long-term health and environmental effects of new pollutants. The research underscores the need for more comprehensive studies and advanced analytical methods.
  • Strategic Recommendations: The study proposes a multi-faceted approach to address these challenges, including enhanced monitoring and data sharing, development of new analytical techniques, and the integration of risk assessment into pollution control strategies. It also emphasizes the importance of public health initiatives and stakeholder engagement.

Over the past decade, research on new pollutants has grown significantly, with China emerging as a global leader in this field. This study stands out by providing a comprehensive review and strategic recommendations, involving contributions from leading scientists and policymakers. The collaborative efforts highlight the importance of interdisciplinary research in addressing complex environmental challenges.

As China continues to lead in environmental protection and public health, understanding and managing new pollutants is crucial. This study offers valuable insights and a strategic framework for addressing these emerging challenges. By implementing the proposed recommendations, China can enhance its capacity to monitor, assess, and mitigate the impacts of new pollutants, paving the way for a more sustainable and healthier future.

Stay tuned for more updates on this groundbreaking research, which highlights the importance of a comprehensive approach to managing new pollutants and protecting public health.

 

 

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  • Citation: Xu, J., Zhao, X., Jin, X. et al. Addressing the challenges of new pollutants in China: current status, knowledge gaps, and strategic recommendations. Carbon Res. 4, 48 (2025). https://doi.org/10.1007/s44246-025-00214-8
  • Title: Addressing the challenges of new pollutants in China: current status, knowledge gaps, and strategic recommendations
  • Keywords: New pollutants; Pollution control strategy; Analytical methods; Risk assessment; Public health

 

 

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About Carbon Research

The journal Carbon Research is an international multidisciplinary platform for communicating advances in fundamental and applied research on natural and engineered carbonaceous materials that are associated with ecological and environmental functions, energy generation, and global change. It is a fully Open Access (OA) journal and the Article Publishing Charges (APC) are waived until Dec 31, 2025. It is dedicated to serving as an innovative, efficient and professional platform for researchers in the field of carbon functions around the world to deliver findings from this rapidly expanding field of science. The journal is currently indexed by Scopus and Ei Compendex, and as of June 2025, the dynamic CiteScore value is 15.4.

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De-mystifying common misconception about the prevalence of legionella bacteria



There is a common misconception that legionella is only found in air conditioners and water towers, however, Griffith University research has found people are likely exposed to the bacteria through other sources including through soil.



Griffith University

Positive sample 

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Positive sample

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Credit: Griffith University






Associate Professor Lara Herrero from Griffith’s Institute for Biomedicine and Glycomics tested blood donor serum from Queensland donors to see if they were exposed to legionella bacteria which leads to Legionnaire’s disease, a serious form of pneumonia.

“We tested 1000 samples of blood, 500 from 2016 and 500 from 2023, to see if donors had antibodies against the bacteria,” Associate Professor Herrero said.

“These two windows of time were critical as Queensland observed an increase in Legionnaire’s disease cases in 2021-2022.

“The research assessed seroprevalence, or the level of pathogen in a population, as 2016 and 2023 represented before and after the higher incidence rate.”

The research found while Legionella prevalence remained stable, L.pneumophila, commonly found in air conditioning vents had decreased, while L. longbeachae (more commonly found in soil) had increased.

This is consistent with public health case numbers which show Legionellosis caused by L. longbeachae has dominated cases in the past five years.

“We know that L. longbeachae is prevalent in soil, so we should be aware of the possible exposure risk, especially when it comes to potting soils,” she said.

“We can all take measures to minimise our exposure when gardening or using potting soil such as wearing a mask.

“It is especially important for vulnerable individuals such as the elderly, immunosuppressed, or those with co-morbidities to take particular care.”

Legionnaire’s disease is an urgent notifiable condition which presents as a febrile illness or pneumonia, which may be severe.

Symptoms include fever, chills, cough, and shortness of breath.

Humans contract the infection via inhalation and is not spread from person to person.

Although relatively uncommon, Legionnaire’s disease may be life-threatening and is thought to be responsible for approximately five to 15 per cent of all community-acquired pneumonias.

The paper ‘Seroprevalence of antibodies against legionella species in North Eastern Australian blood donors, 2016 and 2023’ has been published in The Journal of Infectious Disease.

 

New research uncovers a ‘ghost’ of the Australian bush




Curtin University

Bettong illustration 

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Bettong illustration by Nellie Pease.

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Credit: Nellie Pease.





A new species of a native bushland marsupial – closely related to the kangaroo – has been discovered but is already likely extinct, new research shows.

 

Analysing fossils collected from caves of the Nullarbor and southwest Australia, researchers from Curtin University, the Western Australian Museum and Murdoch University uncovered a completely new species of bettong as well as two new subspecies of woylie.

 

Woylies are ecosystem engineers capable of turning over several tonnes of earth each year in search for their favourite mushroom treats. The cute kangaroo relatives, native to Western Australia, are the country’s most translocated mammal because they are moved as part of conservation efforts to save the critically endangered species.

 

Lead author Mr Jake Newman-Martin, a PhD student in Curtin’s School of Molecular and Life Sciences, said the discovery unlocked vital clues about the diversity of woylies, also known as brush-tailed bettong.

 

“Woylies are critically endangered marsupials that have been the focus of conservation efforts for decades,” Mr Newman-Martin said.

 

“In this new research, we’ve named a completely new species based on fossil material, and two new subspecies of woylies for the first time. Sadly, many of them have become extinct before we’ve even been aware of them.

 

“Our results split the critically endangered woylie into two living subspecies, which is very important for conservation when we’re considering breeding and translocation initiatives to increase the size and fitness of populations.”

 

Co-author Dr Kenny Travouillon, Curator of Terrestrial Zoology at  the Western Australian Museum, said researchers used bone measurements to assess the diversity of woylies and the number of species.

 

“This research confirmed several distinct species and expanded the known diversity of woylies by measuring skull and body fossil material that had previously not been looked at in detail,” Dr Travouillon said.

 

“What we’ve found through this research tells us that examining fossils alongside genetic tools could offer significant insights that may help conservation efforts of this critically endangered native species.”

 

The scientific name of the new Nullarbor species has been described as Bettongia haoucharae but the researchers will work with Indigenous people to identify an appropriate collaborative name given woylie is a Noongar word.

 

The research examined specimens from the Western Australian Museum, South Australia Museum, Australian Museum, Queensland Museum, Museums Victoria, Flinders University research collection, Natural History Museum London, and Oxford University Museum of Natural History.

 

The full paper, titled ‘A taxonomic revision of the Bettongia penicillata (Diprotodontia: Potoroidae) species complex and description of the subfossil species Bettongia haoucharae sp. nov.’, was published in Zootaxa and can be viewed online here.

 

Ash boosts biogas production





University of Jyväskylä - Jyväskylän yliopisto

White mustard (Sinapis alba L.) 

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White mustard (Sinapis alba L.) was used as an experimental crop, and the responses followed were seed germination, plant growth, and number of flowers.

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Credit: University of Jyväskylä




Researchers from the University of Jyväskylä and the Natural Resources Institute Finland have discovered that ash appears to be an excellent additive in the anaerobic digestion process in terms of methane production and the fertilizing properties of the remaining digestate. The research results were recently published in a scientific journal Biomass and Bioenergy. 

As the global population increases, efficient food production becomes more critical. Rising fertilizer needs and limited access to mined materials like phosphate -classified by the EU as critical raw materials- highlight the urgency of developing recycled alternatives from local side streams and waste. 

- Anaerobic digestion is a well-known biological process where microorganisms break down organic material in the absence of oxygen, producing biogas and nutrient rich digestate. We wanted to find out how does addition of ash affect the biogas production in anaerobic digestion of biowaste and how are the fertilizing properties of the digestate affected, explains Senior Lecturer Siiri Perämäki from the University of Jyväskylä. 

The positive effect of ash 

Researchers noticed that ash can be used as an additive in anaerobic digestion of biowaste to increase methane production and improve the quality of the digestate as a fertilizer.  

- However, too much ash can have the opposite effect on methane production, says principal scientist Saija Rasi from Natural Resources Institute Finland.  

The study also found that the raw material used in the combustion process affects the quality of the ash and, consequently, methane production. 

- Ash produced from wood combustion was more favorable than ash from peat combustion, which is probably due to the different trace element concentrations in the ash. Adding trace elements in the form of ash has a complex effect on the anaerobic digestion process and is very case-specific, depending on the type of ash, the raw material for anaerobic digestion, and the microbial community, Rasi explains. 

 Ash addition increased biomass, flowering and germination 

The researchers also observed that ash increased plant growth in a growing trial with mustard plants. Adding ash affects the growing medium by increasing its nutrient and trace element content and organic matter, as well as reducing its acidity. Germination and flowering decreased in all growing media containing digestate but increased with the addition of ash. 

- It is likely that the plants with digestate addition allocated more resources to growth than to reproduction. Heavy metal concentrations in growing media remained safe, and no harmful metal accumulation was observed in plants, says Perämäki.  

The study shows that ash could be used both in biogas plants to optimize the process and to improve the quality of recycled fertilizers when used in appropriate amounts.  

- This supports the principles of the circular economy and offers new opportunities for utilizing side streams, Perämäki notes. 

The study was conducted as part of the KIRE project (Circular Economy Ecosystem: Waste and Side Streams as Raw Materials), which was funded by the European Regional Development Fund through the Council of Central Finland, the City of Jyväskylä, Mustankorkea LTD, Helsinki Region Environmental Services (HSY), Saarijärven Kaukolämpö LTD, and Kuopion Energia LTD. Part of the study was carried out as a bachelor's thesis by students at the Department of Environmental Science, which investigated the fertilizing properties of the digestate.