At present, the shift from carbon sink to source in the Amazon rainforest, large-scale mortality of low-latitude coral reefs, and accelerated thawing of permafrost are all leading to the cascading breakthrough of critical tipping points in ecosystems, posing ecological risks that threaten the very foundation of human survival. Science Bulletin has published online the research of Professor Yanfen Wang's team from the University of Chinese Academy of Sciences, titled "A framework for quantifying state transitions in complex ecosystems using energy flow networks," This study deeply integrates energy flow networks with Nash equilibrium game theory to construct a new analytical framework that can quantitatively analyze the mechanism of ecosystem steady-state transitions, providing a valuable time window for global ecological governance and offering decision-making basis for adaptive ecosystem management.

It has long been recognized that sweat is a rich source of physiological information. However, its inherent inaccessibility of sweat in sedentary individuals and scenarios has restricted broader applications in health monitoring. Now, writing in the journal National Science Review, a team of researchers presents an autonomous fabric electrochemical biosensor that addresses this challenge. The device integrates biosensing fibers and a low-current iontophoresis module based on a skin-interfaced stabilized hydrogel (SSIH) electrode into a breathable textile platform, enabling gentle and efficient sweat induction. With its skin-conforming design and imperceptible operation, the system enables intuitive health interaction suitable for diverse users and everyday wear.

Can cities continue to grow without destroying the planet? A new study from the Institute of Environmental Science and Technology at the Universitat Autònoma de Barcelona (ICTA-UAB), Spain, offers insight into this complex issue. While there is no general answer to the question of whether sustainable urban growth is possible, as it depends on local physical conditions and development levels, what is clear is that continued urban growth is not desirable everywhere. More sustainability will require rigorous planning, effective governance, and a critical reassessment of dominant development narratives.

Se Jin Park, a researcher from Professor Yong Man Ro’s team at KAIST, has announced 'SpeechSSM', a spoken language model capable of generating long-duration speech that sounds natural and remains consistent.