Friday, June 06, 2025

 

Changing winds could amplify North Atlantic climate anomaly



University of Alaska Fairbanks
global_map_NAWH.png 

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Maps show projected sea surface temperature trends over 2015-2099 due to moderate-high greenhouse gas emissions. The upper map includes a model where winds can't change the ocean circulation, and the lower one shows the same model with wind-driven changes.

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Credit: Image by Kay McMonigal





As the planet’s oceans are gradually warmed by the effects of climate change, a huge area in the North Atlantic stands out as an unusual zone of relative cooling.

A region that stretches roughly from Greenland to Ireland, counterintuitively dubbed the North Atlantic warming hole, is a conspicuous patch of blue on global climate change maps. Researchers say its temperature contrast could intensify in the decades ahead as shifting climate-driven winds amplify the cooling process in the North Atlantic.

A new study, published this month in the Journal of Climate, projects that wind-driven changes in ocean circulation would begin adding to the cooling effect in the region by about 2040.

“Even though there’s global warming, it’s an area that’s cooling, and it’s expected to continue to cool,” said Kay McMonigal, an assistant professor at the University of Alaska Fairbanks College of Fisheries and Ocean Sciences and lead author of the study.

Scientists are still working to fully understand why the relative cooling in the North Atlantic warming hole is happening, but global circulation patterns are considered a key ingredient. That led researchers to use computer modeling to create two scenarios: one in which changing winds affect ocean circulation, and one in which they don’t.

Those models, which incorporate a moderate-high scenario for future greenhouse gas emissions, indicate that the North Atlantic warming hole won’t immediately be affected by wind-driven ocean circulation changes. That changes by about 2040, with weaker winds contributing to added cooling in the region for several decades. Lighter winds would reduce stirring in the ocean between Newfoundland and Greenland, diminishing the amount of warm subsurface water being mixed upward. Large-scale ocean circulation would then spread that cooling signal to the wider region.

Temperature shifts in the North Atlantic warming hole are an important ingredient in future climate change, with the potential to significantly affect precipitation levels and temperatures throughout the broader region. Because of that outsized role in climate impacts, a clearer understanding of the dynamics that could sustain or intensify the warming hole are important for building accurate models.

“There are a lot of implications for weather, especially over Europe,” McMonigal said. “If we want to be able to predict things well, the winds need to be accounted for.”

Other contributors to the study include Melissa Gervais, an associate professor at Pennsylvania State University, and Sarah Larson, an associate professor at North Carolina State University.

 

From CO₂ to methane: Politecnico di Milano study featured on the cover of ACS Catalysis




Politecnico di Milano
ACS Catalysis cover 

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ACS Catalysis cover

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Credit: ACS Catalysis cover





Milan, 5 June 2025 - Every day, tonnes of CO₂ are released into the atmosphere, but what if we could transform it using clean energy? This is the question explored in a recent Politecnico di Milano study, which was featured on the cover of the scientific journal ACS Catalysis. The research focuses on a process that transforms carbon dioxide and hydrogen into methane using carefully engineered nickel nanoparticles. Entitled “Deciphering Size and Shape Effects on the Structure Sensitivity of the CO₂ Methanation Reaction on Nickel”, the study by Gabriele Spanò, Matteo Ferri, Raffaele Cheula, Matteo Monai, Bert M. Weckhuysen and Matteo Maestri investigates how the size and shape of nickel nanoparticles influence the rate at which carbon dioxide is converted into methane.

Researchers at the Laboratory of Catalysis and Catalytic Processes (LCCP) at Politecnico di Milano’s Department of Energy are tackling a key climate challenge: reusing CO₂ to produce sustainable fuels. The LCCP is an internationally recognised leader in heterogeneous catalysis, driving forward practical solutions for cleaner energy.

Combining atomistic simulations with experimental data, the team demonstrated that the size and shape of nickel nanoparticles play a decisive role in accelerating the methanation reaction. This insight resolves a longstanding scientific debate and opens new avenues for optimising other industrial processes such as ammonia synthesis and the Fischer–Tropsch process.

The study’s lead author and PhD candidate at the Politecnico di Milano’s Department of Energy Gabriele Spanò said: "Understanding the role of nanoparticle shape and size allows us to design more efficient catalysts. It’s a vital step in treating CO₂ as a resource rather than waste to be mitigated.”

Politecnico di Milano’s Department of Energy full professor and LCCP coordinator Matteo Maestri said: “This work shows that combining experimental evidence with advanced modelling can tackle complex, real-world challenges. The methodologies applied are the result of years of development in atomistic analysis for catalytic systems.”

The study offers valuable guidelines for developing catalytic materials geared towards CO₂ conversion, contributing meaningfully to the energy transition.

ICYMI

CBD and related phytocannabinoids successfully clear topical fungal infections in moth larvae



PLOS
CBD and related phytocannabinoids successfully clear topical fungal infections in moth larvae 

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Cryptococcus neoformans treated with CBD

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Credit: Dinh et al., 2025, PLOS Neglected Tropical Diseases, CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/)




CBD and related phytocannabinoids show activity against fungi causing deadly cryptococcosis in moth larvae, as well as activity against fungi causing athletes foot, ringworm, and other diseases, successfully clearing topical infections.

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Access the freely-available article here: https://plos.io/4kV4DZa

Article Title: Uncovering the antifungal potential of Cannabidiol and Cannabidivarin

Author Countries: Australia, United Kingdom

Funding: This study was primarily funded by Macquarie University Research Acceleration Scheme (MQRAS298911389) grant to AKC, HD, MC and MJS. This work was supported by the Australian Research Council Industrial Transformation Training Centre for Facilitated Advancement of Australia’s Bioactives (Grant IC210100040) to AKC, MC, PAH, and ITP. EJMC was funded by the International Cotutelle Macquarie Excellence Scholarship (Cotutelle iMQRES 20224791). AKC was funded by ARC Future Fellowship FT220100152. Funders played no role in study design, data collection, analysis and interpretation of data, or the writing of this manuscript.

Thursday, June 05, 2025

 

Russia using museums for ideological indoctrination about the Ukraine invasion, study shows



University of Exeter





Russian leaders have increasingly used museums and their digital collections to show propaganda about Slavic unity and deny Ukrainian identity since the 2022 invasion, analysis shows.

The research shows the increasing ideological indoctrination of Russian museums and digital spaces, a tightening of access to digital collections, and using copyright to limit and control how online collections are accessed and reused.

Russian museum websites and online collections have portrayed Ukraine, its history, and culture as inseparable from Russia before 2022. During the past three years they have hosted exhibitions which represent occupied territories as historically and culturally Russian, framing the invasion of Ukraine as a fight against Nazism and NATO, and glorifying the invasion and individuals who served in the Russian Army.

Ksenia Lavrenteva, from the University of Exeter, examined activities organised by Russian museums before and after the 2022 invasion of Ukraine, as well as legislation, cultural policies, and museum practices.

This included four museums - Russian Museum, State Hermitage Museum, the State Historical Museum, the Pushkin State Museum of Fine Arts, and the State Catalogue, a national database of digitised museum objects, as well as 25 Russian museum websites.

She found Russian museums are functioning as components of the state’s ideological apparatus. This means researchers using them should prioritize non-Russian sources, particularly those from Ukrainian and other perspectives, to ensure a more critical and balanced approach to cultural heritage.

Ms Lavrenteva found since 2022 there have been at least 50 online exhibitions addressing Ukraine—its history, culture, and the Russian invasion—hosted by Russian museums and museums in occupied Ukrainian territories.

Before 2022 the State Catalogue, a national database of digitised museum objects, had restricted provenance information and museum-controlled usage policies that hindered academic and creative endeavours. After the invasion there was more overt mechanisms of ideological indoctrination, tighter information control, and the closure of data related to Russia.

Ms Lavrenteva said: “The research shows how museums within authoritarian regimes can be weaponized to reinforce state ideology, suppress dissent, and obscure the history of those who do not conform to state narratives.

“Open access can help to ensure greater diversity in representations, expressions, and cultures. But it can enhance the spread of ideological narratives with the reuse of Russian-produced data.

“This study underscores the need to scrutinize who controls access to cultural data and for what purposes. There is a need for a more critical and context-sensitive approach to open access —one that balances its potential for inclusivity with safeguards to prevent the amplification of oppressive ideologies.”

Numerous museum exhibitions and events have depicted heroes of the Russian invasion and soldiers. Belongings of individuals serving in the Russian Army during the invasion are included in the museum collections.

The “Angels of Donbas” project commemorates children who died between 2014 and 2023 in the Donetsk and Luhansk regions. This project, created by the Donetsk Republican Local History Museum (under the control of the occupying government), regularly appears on the websites of various museums in Russia and in occupied territories, as well as on museum social media networks. Although labelled as an exhibition, the project consists of only 18 slides featuring photographs and brief textual descriptions.

During the first year of the invasion, Russian museums hosted 58 events on “Nazism,” with some focusing on World War II and others drawing parallels with contemporary issues, specifically discussing “Ukrainian neo-Nazism”. Exhibitions such as “Evidence of Crimes by Ukrainian Nazis in Donbas” and “Ordinary Nazism,” trace the “history of Ukrainian Nazism” and portray Ukraine as a Nazi state, thereby justifying the Russian invasion as a fight against Nazism akin to World War II. Exhibitions such as “NATO: History of Lies” and “NATO: Chronicles of Cruelty” aim to present the Russian war in Ukraine as a war against NATO.

“Donbas — Russia: History and Modernity” aims to showcase “authentic documents and other material evidence of the centuries-old inseparable connection between Donbas and Russia. The exhibition begins its historical narrative only after the region became part of the Russian Empire, while disregarding previous history in the region. This exhibition is featured both online and physically by over 50 museums, libraries, and galleries in Russia and the occupied territories of Ukraine.

Russian museums and those in occupied Ukrainian territories have marked occupation anniversaries by presenting these regions as part of Russian history and culture.

The Russian Ministry of Culture has launched the 2023 Guidelines for Creating Exhibitions on the History of the Special Military Operation. These exhibitions are expected to focus on the occupied regions of Ukraine from 2022, emphasize these regions’ historical significance as integral parts of Russia, highlight alleged anti-Russian sentiments in Ukraine, and present the purported reasons for Russia’s invasion. These reasons include the “ongoing terrorist shelling of Donbas” and “NATO’s involvement in enhancing the combat capabilities of the Ukrainian Armed Forces”.

Recommendations for museum displays include illustrating “Ukrainian nationalist ideologies,” depicting Ukrainian soldiers as Nazis and drug addicts, and documenting civilian experiences through artifacts such as “children’s toys with blood stains or damage,” “instruments of torture,” and “oral testimonies from residents of liberated territories”.

The recently adopted Federal Law No. 63-FZ (2023) stipulates that museum objects located in occupied territories are part of the Museum Fund of the Russian Federation. The law requires objects taken from Ukrainian museums or located in the occupied territories and illegally held by Russia to be digitized and presented in accordance with Russian ideology.

 

 

 

How and for whom using generative AI affects creativity: a field experiment



Tulane University






A new study led by Tulane University researchers reveals that generative AI tools, such as ChatGPT, can enhance employees' creativity — but only if they know how to think critically about their own work and utilize the tools effectively.

The study, set to be published in the Journal of Applied Psychology, is one of the first field experiments to test how large language models (LLMs) impact creativity in real-world work settings. Researchers worked with a technology consulting firm and randomly assigned 250 employees to either use ChatGPT or not during a regular workweek.  Supervisors and outside reviewers evaluated their creativity.

Employees with access to AI performed better — generating more novel and useful ideas — than those who didn’t use the tool. But the boost wasn’t equal across the board.

The employees who benefited most weren’t just using ChatGPT passively. They were actively thinking about how to approach their work, what problems they were trying to solve, and how best to use the AI to support their goals. In short, they were skilled at managing their own thinking — planning, reflecting, and adjusting their approach as needed.

“Generative AI use doesn't automatically make people more creative. It boosts creativity only for employees who use ‘metacognitive strategies’ — those who actively analyze their tasks, monitor their thought processes and adjust their approaches,” said lead author Shuhua Sun, who holds the Peter W. and Paul A. Callais Professorship in Entrepreneurship at Tulane University’s A. B. Freeman School of Business.  

These findings have major implications for companies investing in AI to drive innovation. Simply rolling out tools like ChatGPT isn’t enough, the researchers say. To achieve results, companies also need to help employees develop better thinking habits — including how to assess problems, adjust strategies, and utilize new resources.

“Even the most advanced generative AI systems won’t enhance creativity if employees are passive consumers of their output and lack the metacognitive strategies needed to engage with them effectively. To unlock AI’s potential for boosting workplace creativity, organizations must go beyond simply deploying new tools—they also need to invest in developing employees’ metacognitive skills and promote thoughtful, strategic use of AI to acquire the cognitive job resources that support creative thinking,” Sun said.

The good news, according to the study, is that these thinking skills can be taught. The researchers point to short training programs that help workers become more intentional in how they plan, monitor, and adapt their work — all of which make them more effective at using AI tools creatively.

The study’s implications extend beyond the workplace. Sun and his coauthors urge educators and policymakers to treat metacognitive skill development as a core priority in preparing students and workers for the age of AI. While education systems have long emphasized cognitive skills, they have often paid less attention to developing metacognitive abilities—skills that will be essential as AI becomes an everyday tool in the future of work.

“If we want people to thrive alongside AI, we need to start treating metacognitive skill development as a foundational part of education and professional training in the AI era,” Sun said.

The study also included researchers from Renmin University of China, Nanyang Technological University, Rice University, and the Massachusetts Institute of Technology.

New USF study: Why fake online reviews still fool consumers



Are consumers naturally skeptical of online reviews, or do they tend to believe them? The answer lies in what psychologists call a “truth bias”




University of South Florida

Dezhi Yin -- University of South Florida 

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Dezhi Yin -- University of South Florida

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Credit: USF





TAMPA, Fla. (June 5, 2025) – Despite growing awareness of fake online reviews, a new University of South Florida study finds that consumers still overwhelmingly trust what they read — even when they shouldn’t.

The article, “The Illusion of Authenticity in Online Reviews: Truth Bias and the Role of Valence,” was recently published online in the premier journal Information Systems Research.

The research investigates a key question: Are consumers naturally skeptical of online reviews, or do they tend to believe them? The answer lies in what psychologists call a “truth bias” — the tendency to assume information is truthful unless there’s strong evidence otherwise.

“Our research is among the first to examine how consumers make real or fake judgments of online reviews,” said study co-author Dezhi Yin, an associate professor at the University of South Florida Muma College of Business. “A better understanding of the consumer perspective is critical, as it is consumers who are the ultimate target of review manipulation.”

Other co-authors include Samuel D. Bond of the Georgia Institute of Technology and Han Zhang of Georgia Tech and Hong Kong Baptist University.

The findings are derived from five experimental studies conducted between 2018 and 2023, in which Yin and his co-authors gave study participants a collection of reviews and asked them to classify each review as “real” or “fake.”

Even when told in advance that half the reviews were fabricated, participants consistently classified the majority of reviews as real. 

In one example, participants were shown 20 restaurant reviews and told that only 10 of the reviews were authentic. All the reviews were presented on a single screen, making it easy for participants to go “back and forth” to calibrate their judgments. Nonetheless, they still classified an average of 11.38 reviews as authentic.

“This illustrates the power of truth bias in this context,” Yin said.

The researchers also explored how the tone of reviews — positive or negative — affects perceptions of authenticity. Real-world data from a variety of online platforms shows that negative reviews are more likely to be fake than positive reviews.

However, participants in the studies were substantially more likely to trust negative reviews than positive reviews. “Our findings suggest a striking contrast between reality and perception,” Yin said.

The research has significant implications for platforms and marketplaces that rely heavily on consumer reviews. The researchers argue that relying on users to “report” suspicious content is largely ineffective. Instead, platforms should prioritize identifying and mitigating fake negative reviews and labeling potentially fraudulent content.

They also suggest that interface design can play a role in reducing deception, for example, by grouping positive and negative reviews separately or providing rating-based sorting tools.

Yin and his co-authors hope to inspire more research that builds on theories of deception and consumer psychology to combat misinformation in the digital marketplace.

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About the University of South Florida

The University of South Florida, a high-impact research university dedicated to student success and committed to community engagement, generates an annual economic impact of more than $6 billion. Across campuses in Tampa, St. Petersburg, Sarasota-Manatee and USF Health, USF serves approximately 50,000 students who represent nearly 150 different countries. U.S. News & World Report has ranked USF as one of the nation’s top 50 public universities for six consecutive years and, for the second straight year, as the best value university in Florida. In 2023, USF became the first public university in Florida in nearly 40 years to be invited to join the Association of American Universities, a group of the leading 3% of universities in the United States and Canada. With an all-time high of $738 million in research funding in 2024 and a ranking as a top 20 public university for producing new U.S. patents, USF is a leader in solving global problems and improving lives. USF is a member of the American Athletic Conference. Learn more at www.usf.edu.