Scientists have made major progress in explaining friction, but predicting and controlling it still depends heavily on experiments. A comprehensive review examines the physics-based models behind friction, highlights why friction remains difficult to predict, and identifies key challenges that could make friction control more precise and reliable.

In the fields of material science and engineering, understanding the principles of wear and friction is pivotal for the development and optimization of materials and mechanical systems. A research team has synthesized the current research on wear modeling and friction-induced noises, exploring their mechanisms, influencing factors, and predictive challenges.  By studying wear modeling and friction-induced noise, engineers are better able to predict the lifespans of components and prevent structural failure across a wide range of industries.

PFAS, often called “forever chemicals,” are a growing global concern because they persist in water, are difficult to remove, and have been linked to health risks, including certain cancers. A new review by researchers from Hanyang University shows that the length of a PFAS molecule’s fluorinated carbon chain is a key predictor of its environmental behavior and treatment response. The study found that short-chain PFAS are generally more mobile and harder to remove, providing a practical framework for improving water treatment and contamination cleanup.

A nationwide survey published in the Journal of Intensive Medicine provides a detailed overview of intensive care units (ICU) across mainland China. The study analyzed responses from intensivists working in hospitals across 31 provinces. It examined ICU capacity, workforce characteristics, disease patterns, and medical technologies. While treatments such as mechanical ventilation are widely available, advanced technologies like extracorporeal membrane oxygenation remain limited. The findings highlight regional disparities and offer insights for strengthening critical care planning.