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Debate on human aging and lifespan

The issue of human lifespan has long been a matter of controversy among scientists. In spite of the recent claim by Dong et al that human lifespan is limited to 115 years, with the mounting improvements in biotechnology and scientific understanding of aging, we may be confident that aging will slow down over the course of the current century extending human longevity much longer than 115 years.

Mapping immune cell interactions in gut tissue reveals changes in ulcerative colitis

In a new study published in Science Immunology, researchers at King’s College London looked at a type of tissue important for the immune response called gut-associated lymphoid tissue (GALT), which is located within the lining of the gut. Unlike other tissue structures in the gut lining that act as a barrier between the trillions of bacteria in the gut and the rest of the body, GALT actively transports gut microbes into the body. By doing this, GALT activates immune responses that help maintain a stable relationship with beneficial gut bacteria.

Typically, when the body encounters microbes, it triggers inflammation, sending immune cells to the affected area to fight the pathogen. However, GALT behaves differently. Despite its close and consistent interaction with microbes, GALT does not become inflamed.

To understand how GALT achieves this, the team mapped the interactions and locations of immune cells in GALT. They also looked at how these interactions changed in ulcerative colitis—an inflammatory bowel disease in which parts of the large bowel become swollen, inflamed and ulcerated. According to Crohn’s & Colitis UK, at least 1 in every 233 people in the U.K. have ulcerative colitis. The condition can significantly affect quality of life. Previous research has linked GALT in the appendix to ulcerative colitis.

Many cancers originate from a single cancer cell and evolve through early bursts of chromosome changes

A comprehensive multi-cancer study by researchers at The University of Texas MD Anderson Cancer Center has revealed that cancer cells within tumors are genetically diverse, yet all carry the same core genetic changes that can be traced back to a common ancestral cell, providing a single-cell view of how tumors adapt, survive and diversify. Understanding this helps explain why some cancer cells manage to survive treatment, paving the way for more tailored diagnostic and therapeutic strategies.

The study, published in Cancer Discovery, was led by Nicholas Navin, Ph.D., chair of Systems Biology. The research shows that cancer cells do not evolve slowly over time, but rather grow through sudden bursts of rapid genetic changes that include copy number alterations (CNAs)—gains or losses of entire sections of DNA. This creates a family tree of distinct new subpopulations that can influence tumor aggressiveness, metastasis and treatment response.

“Our findings provide the clearest views to date of how cancers originate and evolve at the single-cell level,” Navin said. “By revealing both the shared early genetic events and the bursts that drive ongoing diversity, we now have a roadmap for developing smarter clinical diagnostic and treatment strategies to improve patient outcomes.”

Testing the problem of time with cold atoms

An ultracold atomic gas is used as a self-contained miniuniverse to show that time can be defined without an external clock. It’s demonstrated that entropy exchange between different sectors of the system provides an internal time that robustly orders the dynamics and yields a Schr\ odinger description of the observed evolution.

Long Duration Persistent Photocurrent in 3 nm Thin Doped Indium Oxide for Integrated Light Sensing and In‐Sensor Neuromorphic Computation

Mixed‐Dimensional Van der Waals Heterostructures Enabled Optoelectronic Synaptic Devices for Neuromorphic Applications

Yilin Sun, Yingtao Ding, Dan Xie.

Advanced Functional Materials

The First Brain Upload Just Made Simulation Theory Real

The first real brain upload just happened — and it might be the strongest evidence yet that simulation theory isn’t just philosophy anymore. A startup called Eon Systems copied a complete biological brain (139,255 neurons, 54 million synapses) into a physics simulation, and the digital fly started walking, grooming, and feeding on its own. No training. No AI. Just the copied wiring on a laptop.
We break down how they did it, why a billion euros in previous brain simulation projects failed, what Nick Bostrom’s simulation argument actually says, and why a fruit fly on a laptop just moved the needle on whether our own reality could be simulated. We also look hard at the limitations — this work is not yet peer reviewed — and what it would actually take to scale this to a human brain.

Eon Systems announcement: https://theinnermostloop.substack.com… model paper: Shiu et al. (2024) Nature 634 — https://www.nature.com/articles/s4158… FlyWire connectome paper: Dorkenwald et al. (2024) Nature 634 — https://www.nature.com/articles/s4158… #simulationtheory #brainupload #consciousness.
Brain model paper: Shiu et al. (2024) Nature 634 — https://www.nature.com/articles/s4158
FlyWire connectome paper: Dorkenwald et al. (2024) Nature 634 — https://www.nature.com/articles/s4158

#simulationtheory #brainupload #consciousness

Brain-inspired chip fuses vision, memory, and processing in real time

Team leader Professor Sumeet Walia said the goal was to remove the delay and energy cost of transferring data between separate systems. “We’ve made real-time decision making a possibility with our invention, because it doesn’t need to process large amounts of irrelevant data and it’s not being slowed down by data transfer to separate processors.”

The device also showed the ability to retain visual information for longer periods without frequent electrical refresh signals, which reduces energy use and improves efficiency.

First author and RMIT PhD researcher Aishani Mazumder said the system draws inspiration from how the brain processes information. “Neuromorphic vision systems are designed to use similar analog processing to the human brain, which can greatly reduce the amount of energy needed to perform complex visual tasks compared with today’s technologies.”

Quantum Computing Edges Closer to Reality

Quantum computing has long been viewed as one of the most promising technologies of the future, and 2026 is bringing new signs of progress. Major technology companies and research institutions continue to invest billions into developing more stable and scalable quantum systems capable of solving problems beyond the reach of traditional computers. Recent advances have focused on improving error correction, increasing qubit reliability, and developing practical applications in fields such as drug discovery, materials science, logistics, and financial modelling. While widespread commercial adoption remains years away, experts believe the pace of innovation is accelerating as competition intensifies across the industry.

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