Archaeologists have uncovered evidence for repeated prehistoric occupation in the remote island cluster of Kitsissut, north of Greenland, indicating the first people in the High Arctic were skilled seafarers who had a profound impact on early Arctic environments.
An advance from Monash University could pave the way for faster, smaller, and more energy-efficient lasers and other light-based technologies. Engineers have developed a new type of perovskite material arranged into an ordered "supercrystal." In this structure, tiny packets of energy called excitons work together rather than individually, allowing the material to amplify light far more efficiently. The findings, published in Laser & Photonics Reviews, could have applications in communications, sensors, and computing, improving the performance of devices that rely on light, such as sensors in autonomous vehicles, medical imaging, or electronics.
Australia is in a deep housing crisis.
In a paper in the Journal of Coastal and Riverine Flood Risk, a team from the University of Rhode Island discusses the novel application of Homeland Security exercises to evaluate emergency managers' use of their simulation support tools to improve response to major coastal storms such as Hurricane Katrina.
Using ideas borrowed from topological photonics, researchers in Singapore, France and the US have designed a compact antenna capable of handling information-rich terahertz (THz) signals. Reporting their results in Nature Photonics, the team, led by Ranjan Singh at the University of Notre Dame, say that with further refinements, the design could help underpin future sixth-generation (6G) wireless networks, allowing data to be shared at unprecedented speeds.
Africa's coastlines are under growing threat as sea levels climb faster than ever, driven by decades of global warming caused by human activity, natural climate cycles, and warming ocean waters. Between 2009 and 2024, the continent experienced a 73% increase in sea-level rise, according to a recent study published in Communications Earth & Environment.
The James Webb Space Telescope (JWST) was designed to look back in time and study galaxies that existed shortly after the Big Bang. In so doing, scientists hoped to gain a better understanding of how the universe has evolved from the earliest cosmological epoch to the present. When Webb first trained its advanced optics and instruments on the early universe, it discovered a new class of astrophysical objects: bright red sources that were dubbed "Little Red Dots" (LRDs). Initially, astronomers hypothesized that they could be massive star-forming regions, but this was inconsistent with established cosmological models.
A new study involving researchers from Oxford's Department of Earth Sciences has finally solved the mystery of what caused the collapse of an Ancient Chinese civilization—finding that widespread flooding was to blame. The findings have been published in National Science Reviews.
On-demand delivery services facilitated through online platforms have grown significantly in the past decade, generating work opportunities for independent drivers who can self-schedule their work. In a new study, researchers examined how a new minimum pay requirement for app-based delivery workers in Seattle, Washington, affected workers' earnings and employment.
The study of skull fragments from the Olèrdola (Olèrdola, Barcelona) and Molí d'Espígol (Tornabous, Lleida) sites has provided new evidence that would allow the ritual of "severed heads" from the northeast of the Iberian Peninsula to be located, for the first time, among the Iberian groups of Cessetani and Ilergetes. The discovery allows the southern border of this practice, traditionally associated with the Indigetes and Laietani who lived north of the Llobregat River, to be expanded.
