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Science News for July 4, 2025


KAIST researcher Se Jin Park develops 'SpeechSSM,' opening up possibilities for a 24-hour AI voice assistant

Se Jin Park's SpeechSSM model generates long-duration speech without time constraints, maintaining semantic and speaker consistency. It effectively processes unbounded speech sequences by dividing data into short units and using a Non-Autoregressive audio synthesis model to generate high-quality speech.

A fully soft and multipurpose robotic tactile sensor

A new type of intrinsically soft robotic sensors with quadruple sensing functionalities has been developed, enabling the perception of complex environments in both contact and non-contact manners. The sensors can be fully recycled for reuse, achieving superior cost-efficiency and eco-sustainability.

SourceScience China Press·JournalScience Bulletin·TypeExperimental study·DateJul 4, 2025

The Earth system is on the verge of irreversible transition: Chinese scientists propose a new framework for prediction of tipping points

Researchers develop framework to predict irreversible transitions in ecosystems, based on energy flow networks and optimization models. The framework identifies transition thresholds and quantifies ecosystem stability, providing a foundation for sustainable utilization and scientific protection.

SourceScience China Press·JournalScience Bulletin·DateJul 4, 2025

Synapses in the cerebral cortex are more reliable than those in the rear part of the brain

Researchers at the Carl Ludwig Institute discovered that synaptotagmin 1 in the cerebral cortex responds to lower calcium concentrations, triggering signal transmission and making cortical synapses more reliable and plastic. This knowledge provides a foundation for understanding brain disorders and developing new therapies.

SourceUniversität Leipzig·JournalScience·TypeExperimental study·DateJul 4, 2025

Why your infant is crying

A new Swedish twin study found that genetics largely determine an infant's crying duration, with 50% of variation explained by genes at 2 months and 70% by 5 months. Environmental factors also play a role in infants' ability to settle during the first months of life.

SourceUppsala University·TypeObservational study·DateJul 4, 2025

Planned hydrogen refuelling stations may lead to millions of euros in yearly losses

A study from Chalmers University of Technology found that the EU's hydrogen refuelling station rollout is likely to result in significant economic losses, with some countries facing costs of tens of millions of euros per year. The distribution of stations according to distance may not accurately reflect demand, leading to inefficient u...

SourceChalmers University of Technology·JournalInternational Journal of Hydrogen Energy·TypeComputational simulation/modeling·DateJul 4, 2025

A review of topology deign and drive control in arc-linear motors for direct-drive application

This study provides a comprehensive overview of arc-linear motors (ALMs) used in direct-drive applications, discussing their topologies, working principles, performances, and optimization techniques. Key findings highlight the merits and demerits of various ALM types and future trends in motor design and control.

SourceCES Transactions on Electrical Machines and Systems·JournalCES Transactions on Electrical Machines and Systems·TypeExperimental study·DateJul 4, 2025

Your memories create time

The brain segments and organizes events into experiences by placing unique bookmarks on them, allowing us to revisit and learn from our lives. The lateral entorhinal cortex creates a signal that constantly drifts in a pattern never repeating itself, marking the beginning and end of an experience.

SourceNorwegian University of Science and Technology·JournalScience·TypeExperimental study·DateJul 4, 2025

Study reveals beneficial microbes that can sustain yields in unfertilized fields

Researchers at Nara Institute of Science and Technology have found beneficial microbes in rice roots that can support plant growth and reduce the need for synthetic fertilizers. The study reveals an increase in microbial diversity as plants mature, with nitrogen-fixing bacteria enriching the soil.

SourceNara Institute of Science and Technology·JournalPlant and Cell Physiology·TypeExperimental study·DateJul 4, 2025

A reflective sapphire@PiGF@alumina color converter enabling ultrahigh luminescence laser-driven white lighting

Researchers have developed a reflective sapphire@PiGF@alumina color converter that achieves an ultra-high luminous flux of 6749lm. The converter uses double-sided heat dissipation channels and high-heat-conducting sapphire to reduce working temperature and thermal quenching, increasing the effective radiation flux.

SourceTsinghua University Press·JournalJournal of Advanced Ceramics·DateJul 4, 2025

Evidence of p-wave superconductivity at the LaAlO3/KTaO3 interface

The study reveals evidence of potential p-wave superconductivity at the LaAlO3/KTaO3 interface and proposes a universal approach for identifying superconducting pairing mechanisms. By analyzing tunneling spectroscopy, the researchers observed distinct spectroscopic behaviors that suggest strong coupling with the superconductor can indu...

SourceScience China Press·JournalScience Bulletin·TypeExperimental study·DateJul 4, 2025

It's never too late to start playing an instrument

Research from Kyoto University found that continuing to play a musical instrument into old age preserves brain function and prevents atrophy in the putamen. Long-term practice showed no decline in verbal working memory performance or gray matter volume, while short-term practice improved memory function for four months.

SourceKyoto University·JournalImaging Neuroscience·TypeImaging analysis·DateJul 4, 2025

Growing a better future – Decades of impact from CGIAR

Between 2022 and 2024, CGIAR delivered innovations to over 20 million farmers across 62 countries, including climate-resilient crop varieties and tools for women's empowerment. The report highlights a cumulative impact of $1.34 trillion in economic benefits from crop technologies developed by CGIAR.

SourceCGIAR·DateJul 4, 2025

Smart textile taps sweat on demand for effortless health tracking

Researchers have developed a fabric-based electrochemical biosensing system that enables autonomous sweat collection and molecular analysis across varied scenarios. The system uses a skin-interfaced stabilized hydrogel electrode to deliver a mild current that activates sweat glands, allowing for real-time health monitoring without rely...

SourceScience China Press·JournalNational Science Review·TypeExperimental study·DateJul 4, 2025

Self-assembled supramolecular interfaces enable stable and high-rate zinc anodes for aqueous hybrid supercapacitors

Researchers develop a scalable strategy to improve zinc anode cycling stability and reaction kinetics using self-assembled supramolecular interfaces. The sulfobutyl-grafted β-cyclodextrin additive enhances Zn2+ transport and deposition uniformity, suppressing corrosion and dendrite growth.

SourceShanghai Jiao Tong University Journal Center·JournalNano-Micro Letters·TypeExperimental study·DateJul 4, 2025

Human wellbeing on a finite planet towards 2100: new study shows humanity at a crossroads

A new study explores two future scenarios: the Too Little Too Late scenario, where humanity risks worsening breakdowns, and the Giant Leap scenario, which shows a window of opportunity for reversing declining wellbeing trends. The study identifies five 'extraordinary turnarounds' that could fundamentally alter humanity's trajectory.

SourceThe Club of Rome·JournalGlobal Sustainability·TypeComputational simulation/modeling·DateJul 4, 2025

Sodium phytate stabilizing lattice oxygen in high-nickel oxide cathodes for thermal runaway inhibition and high voltage operation

Researchers found that sodium phytate inhibits oxygen release and promotes stability in high-nickel oxide cathodes, leading to improved safety and electrochemical performance. The results showed a decrease in thermal runaway temperatures and enhanced cycle life, making PN-modified cathodes suitable for higher voltage operations.

SourceScience China Press·JournalScience Bulletin·TypeExperimental study·DateJul 4, 2025

Synthesis of high mechanical strength and excellent radiation resistance NaX zeolite microspheres via geopolymer in-situ conversion and their adsorption study of 137Cs and 90Sr

High-mechanical-strength NaX zeolite microspheres with excellent radiation resistance were synthesized through geopolymer in-situ conversion. The material exhibits exceptional adsorption performance for Cs+ and Sr2+, reaching equilibrium at 45/30 min with maximum saturated adsorption capacities 138.30 and 153.60 mg·g−1, respectively.

SourceTsinghua University Press·JournalJournal of Advanced Ceramics·DateJul 4, 2025

Climate change cuts milk production, even when farmers cool their cows

A recent study published in Science Advances found that extreme heat can reduce milk production by up to 10% and even when farmers use cooling technologies. The researchers analyzed data from over 130,000 Israeli dairy cows and surveyed more than 300 dairy farmers to understand the impact of climate change on milk supply.

SourceThe Hebrew University of Jerusalem·JournalScience Advances·TypeObservational study·DateJul 4, 2025

Demystifying gut bacteria with AI

Researchers used Bayesian neural network to identify relationships between gut bacteria and metabolites, providing clues about health. The approach outperformed existing methods in analyzing sleep disorder, obesity, and cancer studies.

SourceUniversity of Tokyo·JournalBriefings in Bioinformatics·TypeComputational simulation/modeling·DateJul 4, 2025