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Phys.org / Observations catch galaxy cluster in the process of merging

Astronomers have used the Keck Observatory's DEIMOS multi-object spectrograph to observe a nearby galaxy cluster designated RXC J0032.1+1808. As a result, they found that the cluster undergoes a major merging event. The finding ...

Dec 24, 2025 in Astronomy & Space
Phys.org / Humans made fire 350,000 years earlier than believed, archaeological study finds

A team of researchers led by the British Museum has unearthed the oldest known evidence of fire-making, dating back more than 400,000 years, in a field in Suffolk. The discovery shows humans were making fire about 350,000 ...

Dec 27, 2025 in Other Sciences
Phys.org / Converting CO₂ into valuable chemicals in acidic environments: Iodide ions unlock efficient ethylene production

The emission of carbon dioxide (CO₂) is one of the primary factors contributing to air pollution and climate change on Earth. In recent years, energy engineers have thus been trying to develop systems that could reduce ...

Dec 23, 2025 in Chemistry
Medical Xpress / No, your brain doesn't suddenly 'fully develop' at 25. Here's what the neuroscience actually shows

If you scroll through TikTok or Instagram long enough, you'll inevitably stumble across the line: "Your frontal lobe isn't fully developed yet." It's become neuroscience's go-to explanation for bad decisions, like ordering ...

Dec 27, 2025 in Psychology & Psychiatry
Phys.org / Study says African penguins starved en masse off South Africa

Endangered penguins living off South Africa's coast have likely starved en masse due to food shortages, a study said, with some populations dropping by 95% in just eight years.

Dec 25, 2025 in Biology
Tech Xplore / All-optical chip achieves 100-fold speed boost over top-tier NVIDIA chips

Scientists in China have unveiled a new AI chip called LightGen that is 100 times faster and 100 times more energy efficient than NVIDIA chips, the leading supplier of AI chips worldwide. Instead of using electricity to move ...

Dec 22, 2025 in Hardware
Medical Xpress / Gut bacteria may play role in bipolar depression by directly influencing brain connectivity

Bipolar disorder (BD) is a psychiatric disorder characterized by extreme mood changes. Individuals diagnosed with BD typically alternate between periods of high energy, euphoria, irritability and/or impulsivity (i.e., manic ...

Dec 23, 2025 in Psychology & Psychiatry
Medical Xpress / A urine-based biological aging clock: Machine learning and microRNA offer accurate prediction

Craif Inc. in Nagoya, Japan, working with Nagoya University's Institute of Innovation for Future Society, has developed a urine-based biological aging clock. In validation of the method, predicted ages came within 4.4 years ...

Dec 22, 2025 in Gerontology & Geriatrics
Phys.org / Kolmogorov-Arnold networks bridge AI and scientific discovery by increasing interpretability

AI has successfully been applied in many areas of science, advancing technologies like weather prediction and protein folding. However, there have been limitations for the world of scientific discovery involving more curiosity-driven ...

Dec 22, 2025 in Physics
Phys.org / Ultracold atoms observed climbing a quantum staircase

For the first time, scientists have observed the iconic Shapiro steps, a staircase-like quantum effect, in ultracold atoms.

Dec 25, 2025 in Physics
Phys.org / Cypriot fishermen battle invasive lionfish and turn them into a tavern delicacy

Photis Gaitanos' rough fingers adroitly untangle the venomous spikes of a lionfish from a net, throwing the exotic-looking creature into an ice-filled rubber bin along with other fish from the day's catch.

Dec 27, 2025 in Biology
Medical Xpress / Antiviral trial ties valacyclovir to faster cognitive decline

New York State Psychiatric Institute and Columbia University Medical Center investigators, with co-authors across additional US centers, report greater cognitive worsening at 78 weeks with valacyclovir than with placebo among ...

Dec 22, 2025 in Medications