Electronics & Semiconductors

Light-powered chip harvests energy, computes and senses chemicals in one stack

Most contemporary portable electronics, including laptops, smartphones and smart watches, are powered by batteries that need to be recharged daily or every few days. Over the past decade, however, some engineers have been ...

Archaeology

The oldest deliberately collected fossil ichthyosaur was discovered in Roman Britain around 1,800 years ago

Around 1,800 years ago, a fossilized spinal bone lay on the windswept beaches of Roman Britain until a curious passerby picked it up and carried it far away, only to drop it in a pit.

OpenAI to launch new model after US freeze

ChatGPT maker OpenAI said its latest powerful artificial intelligence model series will be released to the public Thursday, as the U.S. government reportedly approved a broader launch.

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Tech Xplore

Metallic rutile oxides break the rules of cooling

Physicists have long puzzled over a strange contradiction inside a family of minerals called rutile oxides. These materials all share the same crystal structure—but while some of them, like titanium dioxide, are firmly insulating, ...

How approaching sounds can warp your perception of time

Everyone's perception of time is unique. It is a subjective experience shaped by factors such as age, emotions, memory and environmental contexts. And it may also be influenced by background noise, as scientists have demonstrated ...

Study examines Miami-Dade County resilience plans

A University of Miami study has developed a new approach to evaluate how multiple climate resilience plans work together—or fail to do so—in addressing the growing risks posed by climate-related hazards. The researchers analyzed ...

UK museums at 'sharp end' of climate change challenge

As visitors peered at skeletons and preserved animals in a London zoological museum during a UK heat wave, staff focused on a different attraction: a computer screen glowing with red and green temperature indicators.

How tall and short trees can coexist in old growth forests

Forests are shaped by light competition. The trees that grow the tallest have access to the most sunlight, blocking the rays and rendering the shaded space around them inhospitable to shorter trees below. In this stem exclusion ...

Galaxy mergers aren't always obvious

The galaxy Centaurus A is about 11 million light-years away and is the fifth-brightest galaxy in the sky. Because it's so bright, it's been studied extensively by amateur and professional astronomers alike. Also called NGC ...

How proximity steals energy from nanoresonators

Nanomechanical resonators are miniature vibrating structures on chips that oscillate at frequencies ranging from a few kilohertz to gigahertz. They are used as ultrasensitive detectors of mass and force, temperature and pressure, ...

Why Antarctica froze millions of years before the Arctic

East Antarctica hosts the largest ice sheet on Earth, containing enough water to raise global sea levels by 52 meters (171 feet) were it to fully melt. Yet scientists have been puzzled for decades about how and why this ice ...

Climate change is silencing the Pilbara barking gecko

New research from Monash University has provided the first comprehensive assessment of the Pilbara barking gecko (Underwoodisaurus seorsus) and revealed the species is facing a heightened risk of extinction under a rapidly ...

A new approach to measuring sheep liveweight

Sheep farmers could soon be able to estimate their flock's live weight and fleece weight in real time, without the need for labor-intensive handling. The new system, being developed by CSIRO, Australia's national science ...