The kingfisher’s brilliant blue feathers were once used like paint to create works of art. The technique, known as tian-tsui, was popular during China’s Qing Dynasty. And because tian-tsui uses delicate feathers, previous scientists struggled to study them using traditional analytical techniques. So, researchers reporting in ACS Omega developed new methods of investigating these featherworks without harming them. The team found that multiple bird species and layered pigments provided a one-of-a-kind palette. 

Simulating the nonlinear optical processes that shape ultrafast laser pulses is essential for modern laser and accelerator facilities, but conventional physics-based models are too slow for real-time use. Researchers from Stanford University, UCLA, and SLAC National Accelerator Laboratory report a deep learning surrogate that accelerates simulations of second‑order (χ²) nonlinear frequency conversion by orders of magnitude while maintaining high accuracy across complex pulse shapes. Focusing on noncollinear sum‑frequency generation relevant to SLAC’s LCLS‑II X‑ray free‑electron laser, the team developed a long short‑term memory (LSTM) neural network that replaces the most computationally expensive step of standard simulations. Operating entirely in a compressed frequency-domain representation, the model accurately reproduces temporal and spectral pulse features—including strong phase modulation and spectral holes—while reducing simulation times to milliseconds on GPUs. The work points toward machine‑learning‑enabled digital twins that could enable adaptive control and tighter integration between simulation and experiment in laser‑driven facilities.

MIT researchers made 3D devices with nanoscale features that can perform optical computing tasks using visible light. They developed a technique that creates vacancies throughout a hydrogel, then shrinks the specimen to about 1/2000 of its original volume.

For decades, scientists have known that estrogen protects cardiovascular health, but exactly how that protection works—and what happens when it disappears—has remained unclear. New research from University of Texas at Arlington points to the liver and the immune system as critical players.

In October 2025, Integral Consulting conducted a study to determine the effect of an annual firework show in Capitola, California, on the surrounding animal population, observing how the fireworks impacted the feeding patterns of brown bats. The bats were searching for and catching food steadily before the show, but during the fireworks, they were unsuccessful in catching any prey, despite searching. After the show ended, the bats returned quickly to resume hunting but searching and catching were greatly reduced from their pre-show efforts.

Intraoperative changes in visual signals can predict postoperative vision loss in patients undergoing surgery for recurrent craniopharyngiomas. The researchers report that a one-third drop in a key signal serves as an early warning, enabling timely surgical adjustments. This study is among the first to define a tailored threshold for these high-risk, technically challenging tumors, offering a practical step toward safer, more precise neurosurgical care.

In a breakthrough that could transform medical testing, data transmission and future quantum technologies, scientists at the University of Witwatersrand and the University of East Anglia have uncovered a hidden property of light that allows it to twist, spin and behave differently - without mirrors, materials or special lenses.