Friday, December 12, 2025

 

AI can pick up cultural values by mimicking how kids learn



University of Washington






Artificial intelligence systems absorb values from their training data. The trouble is that values differ across cultures. So an AI system trained on data from the entire internet won’t work equally well for people from different cultures.

But a new University of Washington study suggests that AI could learn cultural values by observing human behavior. Researchers had AI systems observe people from two cultural groups playing a video game. On average, participants in one group behaved more altruistically. The AI assigned to each group learned that group’s degree of altruism, and was able to apply that value to a novel scenario beyond the one they were trained on.

The team published its findings Dec. 9 in PLOS One

“We shouldn’t hard code a universal set of values into AI systems, because many cultures have their own values,” said senior author Rajesh Rao, a UW professor in the Paul G. Allen School of Computer Science & Engineering and co-director of the Center for Neurotechnology. “So we wanted to find out if an AI system can learn values the way children do, by observing people in their culture and absorbing their values.”

As inspiration, the team looked to previous UW research showing that 19-month-old children raised in Latino and Asian households were more prone to altruism than those from other cultures. 

In the AI study, the team recruited 190 adults who identified as white and 110 who identified as Latino. Each group was assigned an AI agent, a system that can function autonomously. 

These agents were trained with a method called inverse reinforcement learning, or IRL. In the more common AI training method, reinforcement learning, or RL, a system is given a goal and gets rewarded based on how well it works toward that goal. In IRL, the AI system observes the behavior of a human or another AI agent, and infers the goal and underlying rewards. So a robot trained to play tennis with RL would be rewarded when it scores points, while a robot trained with IRL would watch professionals playing tennis and learn to emulate them by inferring goals such as scoring points.

This IRL approach more closely aligns with how humans develop. 

“Parents don’t simply train children to do a specific task over and over. Rather, they model or act in the general way they want their children to act. For example, they model sharing and caring towards others,” said co-author Andrew Meltzoff, a UW professor of psychology and co-director of Institute for Learning & Brain Sciences (I-LABS). “Kids learn almost by osmosis how people act in a community or culture. The human values they learn are more ‘caught’ than ‘taught.’”

In the study, the AI agents were given the data of the participants playing a modified version of the video game Overcooked, in which players work to cook and deliver as much onion soup as possible. Players could see into another kitchen where a second player had to walk further to accomplish the same tasks, putting them at an obvious disadvantage. Participants didn’t know that the second player was a bot programmed to ask the human players for help. Participants could choose to give away onions to help the bot but at the personal cost of delivering less soup. 

Researchers found that overall the people in the Latino group chose to help more than those in the white group, and the AI agents learned the altruistic values of the group they were trained on. When playing the game, the agent trained on Latino data gave away more onions than the other agent. 

To see if the AI agents had learned a general set of values for altruism, the team conducted a second experiment. In a separate scenario, the agents had to decide whether to donate a portion of their money to someone in need. Again, the agents trained on Latino data from Overcooked were more altruistic. 

“We think that our proof-of-concept demonstrations would scale as you increase the amount and variety of culture-specific data you feed to the AI agent. Using such an approach, an AI company could potentially fine-tune their model to learn a specific culture’s values before deploying their AI system in that culture,” Rao said. 

Additional research is needed to know how this type of IRL training would perform in real-world scenarios, with more cultural groups, competing sets of values, and more complicated problems.

“Creating culturally attuned AI is an essential question for society,” Meltzoff said. “How do we create systems that can take the perspectives of others into account and become civic minded?”

Nigini Oliveira, a UW post-doctoral scholar in the Allen School, and Jasmine Li, a software engineer at Microsoft who completed this research as a UW student, were co-lead authors. Other co-authors include Koosha Khalvati, a scientist at the Allen Institute who completed this research as a UW doctoral student; Rodolfo Cortes Barragan, an assistant professor at San Diego State University, who completed this research as a post-doctoral scholar at UW; and Katharina Reinecke, a professor in the Allen School and director of the Center for Globally Beneficial AI at UW. 

For more information, contact Rao at rao@cs.washington.edu.

 

China’s ecological redlines offer fast track to 30 x 30 global conservation goal




Biochar Editorial Office, Shenyang Agricultural University
A Chinese model for 30 × 30: ecological redlines as other effective area-based conservation measures 

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A Chinese model for 30 × 30: ecological redlines as other effective area-based conservation measures

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Credit: Shaokun Li, Xiaoqian Chen





A new commentary in Environmental and Biogeochemical Processes proposes a practical pathway for countries to meet the global goal of protecting 30 percent of land and sea by 2030, known as the 30 × 30 target, by rethinking how existing ecological policies are counted and governed. Focusing on China, the authors argue that the country’s Ecological Protection Redline policy offers a ready model for turning ambitious maps into real conservation outcomes while balancing development needs.

Turning redlines into real protection

China’s Ecological Protection Redline system has legally identified about 32 percent of the nation’s land as crucial ecological space, creating a nationwide network that safeguards most major ecosystems and many key wildlife species. This framework has already slowed ecological degradation, supported the recovery of endangered species and strengthened the foundation for long term ecological security.​

The commentary suggests that roughly 12 percent of China’s land, currently within these ecological redlines but outside the formal protected area system, could be rapidly recognized as “other effective area based conservation measures,” or OECMs. OECMs are areas where conservation is achieved in practice, even when it is not the primary management goal, and they are now formally acknowledged under the Convention on Biological Diversity.​

A fast track to 30 × 30

By designating eligible parts of the redline network as OECMs, China could close the remaining gap between its interim goal of protecting 18 percent of land and the full 30 percent effective conservation target, without creating large numbers of new parks from scratch. This approach can reduce political resistance and financial costs, since it works within an existing legal and governance framework rather than imposing entirely new land use categories.​

“Ecological redlines already function as the backbone of China’s conservation system,” says lead author Shaokun Li of Beijing Normal University in Zhuhai. “Recognizing qualifying areas as OECMs would transform this backbone into a fast track for achieving 30 × 30 while supporting local communities.” The authors highlight that many redline areas already include strict development controls, restoration requirements and protection of wildlife corridors and water sources.​

A model for emerging economies

The commentary emphasizes that governance capacity, not just the percentage of land on a map, will determine whether the 30 × 30 pledge truly protects biodiversity. By integrating national policies like China’s redlines with international tools such as OECMs, the authors argue that countries can deliver conservation that is both functionally effective and socially grounded.​

The proposed “redlines to OECMs” pathway is presented as a replicable model for other emerging economies where conservation must coexist with dense populations and strong development pressures. The authors call on the global conservation community to recognize and incentivize such nationally tailored innovations so that 30 × 30 becomes a real safeguard for nature rather than a set of fragmented boundaries on paper.​

 

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Journal reference: Li S, Chen X. 2025. A Chinese model for 30 × 30: ecological redlines as other effective area-based conservation measures. Environmental and Biogeochemical Processes 1: e014  

https://www.maxapress.com/article/doi/10.48130/ebp-0025-0014 

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About the Journal:

Environmental and Biogeochemical Processes is a multidisciplinary platform for communicating advances in fundamental and applied research on the interactions and processes involving the cycling of elements and compounds between the biological, geological, and chemical components of the environment. 

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Invisible indoor threats: emerging household contaminants and their growing risks to human health




Biochar Editorial Office, Shenyang Agricultural University
New contaminants in indoor environments: occurrence, transformation, and health risks 

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New contaminants in indoor environments: occurrence, transformation, and health risks

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Credit: Jinze Wang, Xinyi Zhou, Nan Fu, Shan Zhou, Shuo Yang, Jiangping Liu, Wei Du, & Bo Pan





Indoor dust, air and everyday products are exposing people to a growing mix of “new contaminants” inside homes, schools and workplaces, according to a new perspective published in the journal New Contaminants. The authors warn that these emerging chemicals may quietly increase the risk of heart disease, cancer and developmental problems while remaining largely unregulated and poorly monitored indoors.

Hidden pollution indoors

People now spend about 90 percent of their time indoors, yet most pollution research and standards still focus on outdoor air. The paper highlights that indoor spaces have complex mixtures of chemicals from building materials, furnishings, cosmetics, cleaning agents and electronics that can linger and transform over time. Because modern buildings are more airtight to save energy, pollutants released indoors can accumulate and lead to long term exposure.​

“In many buildings indoor pollution can be more severe than what we measure outside and that is especially worrying for children and older adults who rarely leave these environments” says corresponding author Wei Du of Kunming University of Science and Technology. “Our daily routines bring us into constant contact with chemical residues in the air, dust and on surfaces even when we cannot see or smell them.”​

What are “new contaminants”

Unlike traditional indoor pollutants such as formaldehyde or carbon monoxide, new contaminants include persistent organic pollutants, endocrine disrupting chemicals, antibiotics and microplastics that have only recently come under scrutiny. These substances can be released from shampoos, sunscreens, plastics, carpets, paints, toys, electronics and specialized materials used in offices or childcare centers. Once indoors they can enter the body through inhalation, ingestion of dust or skin contact and have been detected in blood, urine, breast milk and even human bone marrow.​

Why they may be more dangerous

The authors emphasize that indoor surfaces and dust act like chemical reactors where contaminants can change into new compounds that may be even more persistent or toxic than the originals. For example, reactions driven by indoor light, ozone and other oxidants can turn flame retardants or fragrance ingredients into derivatives with stronger neurotoxic or endocrine disrupting effects. These processes make it harder to predict health risks using outdoor studies alone and point to the need for indoor specific research.​

Call for standards and protection

The perspective calls for systematic monitoring of new contaminants in different indoor settings including homes, schools, hospitals, offices and recreational facilities to build a comprehensive database for regulators. The authors argue that high resolution measurements, mechanistic studies of chemical transformations and targeted toxicology work are urgently needed to inform next generation indoor air standards. “Protecting human health increasingly means looking inward at the places where we live, learn and work and treating indoor environments as a critical frontier for pollution control” says co corresponding author Bo Pan.​

 

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Journal reference: Wang J, Zhou X, Fu N, Zhou S, Yang S, et al. 2025. New contaminants in indoor environments: occurrence, transformation, and health risks. New Contaminants 1: e017  

https://www.maxapress.com/article/doi/10.48130/newcontam-0025-0018  

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About the Journal:

New Contaminants is an open-access journal focusing on research related to emerging pollutants and their remediation.

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Pure bred: New stem cell medium only has canine components



Researchers create a stem cell medium for canine stem cells that doesn’t contain any human components




Osaka Metropolitan University

A stem cell medium made entirely with canine protein 

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E. coli was used to introduce canine proteins into the medium to act as a scaffold for the stem cells.

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Credit: Osaka Metropolitan University





Canine induced pluripotent stem (iPS) cells possess the ability to differentiate into any type of cell, making them a useful tool for investigating common canine diseases and disease states, including those of humans.

When culturing iPS cells, a culture substrate is required to serve as a scaffold for the cells, which adhere to it and proliferate. Without the scaffold, the cells die or fail to differentiate.

Currently, recombinant proteins derived primarily from humans are used as culture substrates for canine iPS cells. However, these human-derived elements are an alien substance for dog cells, leading to immune rejection and making clinical use difficult.

A research team led by graduate student Kohei Shishida and Professor Shingo Hatoya at the Graduate School of Veterinary Science, Osaka Metropolitan University, engineered E. coli with canine-derived genes that made them produce vitronectin (VTN), a dog protein. The E. coli bacteria acted like factories, creating enough VTN to be used as a scaffold to support the growth of canine iPS cells without using any human- or mouse-derived materials.

They found that the canine-derived VTN supported stem cell culture as effectively as the human-derived version. The stem cells also maintained their full differentiation potential, just as they do in the standard medium.

“This achievement is highly significant as it has paves the way for the stable cultivation of canine iPS cells without the use of human components,” Shishida said. “This is valuable because it enables a fully canine culture system, reducing cross-species contamination risks.”

For potential clinical use, the researchers also evaluated a mutant form, VTN-N, generated by deleting a portion of the protein’s N-terminal region to establish whether trimming down unnecessary or potentially problematic parts of the protein hindered its effectiveness. VTN-N demonstrated similar performance to human-derived VTN, functioning adequately even with a simpler structure. Future studies will enable optimization of the manufacturing process using VTN-N.

“This research brings the clinical application of regenerative medicine for intractable diseases commonly seen in dogs, such as heart disease, neurological disorders, and blood disorders, closer to reality,” Professor Hatoya added. “Canine-derived VTN can be produced stably and cost-effectively using E. coli, making it a useful foundational technology with broad applicability from research to clinical use.”

The study was published in Regenerative Therapy.

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About OMU

Established in Osaka as one of the largest public universities in Japan, Osaka Metropolitan University is committed to shaping the future of society through the “Convergence of Knowledge” and the promotion of world-class research. For more research news, visit https://www.omu.ac.jp/en/ and follow us on social media: X, Facebook, Instagram, LinkedIn.