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Nanozymes map nanoparticle routes inside live cells without genetic engineering

Nanoparticles are widely used in medicine to deliver drugs, genes or imaging agents to specific parts of the body. Once a nanoparticle reaches a cell, however, many things can happen—it can reach its target, be degraded, interact with proteins that help transport it, or interact with proteins that hinder its transport.

A longstanding problem in designing nanomedicines has been understanding what happens to nanoparticles at the cellular level, but scientists have faced many challenges. For example, optical microscopy imaging techniques provide only a generalized view of nanomedicine localization.

On the other hand, proteomics approaches require cell lysis, which disrupts the natural distribution of proteins around the nanoparticle, making it difficult to understand how nanoparticles are transported within the cell. Another method—proximity labeling—enables in situ investigation of intracellular protein-protein interactions, but it relies on genetically engineered enzyme fusion, which limits its applicability across diverse systems.

Dual-mobility hip replacement implant can lower dislocation risk by 70%

A new type of hip replacement implant reduces the risk of joint dislocation after surgery by 70%, according to a new study involving 1,600 patients across 44 hospitals in Sweden and the UK, published in The Lancet. The new implant consists of a small ball encased in a much larger plastic ball, which provides better stability.

Each year, more than 14 million patients worldwide suffer a femoral neck fracture. Total hip replacement (THR), in which both the ball and socket of the hip are replaced, is recommended for older, active individuals with a displaced fracture of the femoral neck. While the vast majority regain good mobility and quality of life, up to 8% of these patients experience a dislocation of their hip, a very painful condition in which the artificial joint slips out of place.

Brain dynamics of the « wave of death » highlighted for the first time

In 2023, scientists at the Paris Brain Institute investigated one of the most fascinating and unsettling transitions in neuroscience: what happens to the cortex when the brain is deprived of oxygen.

In a rat model of systemic anoxia, researchers found that the dying brain does not simply “shut off” all at once. Instead, cortical activity follows a structured sequence: brief high-frequency activity, slowing oscillations, electrical silence, and then a massive wave of anoxic depolarization — often called the “wave of death.”

This wave appeared to begin deep in the neocortex, especially around layer 5 pyramidal neurons, before spreading upward toward the cortical surface and downward toward the white matter. These neurons are large, metabolically demanding projection cells, which may make them especially vulnerable when oxygen and ATP collapse.

But the most important part of the study is that this wave did not always represent an absolute point of no return. When oxygenation was restored within a critical window, researchers observed a “wave of resuscitation,” followed by partial recovery of synaptic activity.

That does not mean death has been “reversed” in a simple or sensational sense. But it does suggest something scientifically powerful: the boundary between life and death in the brain may be more dynamic, layered, and measurable than we often imagine.

This is where the implications become fascinating.

If the “wave of death” is an organized biophysical event, future neurocritical care may one day be able to detect the brain’s approach toward irreversible injury in real time. Instead of relying only on broad markers like heartbeat, oxygen saturation, or flat EEG, clinicians may eventually use more detailed brain-state monitoring to identify whether the cortex is entering a reversible, borderline, or irreversible phase.

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Even Hideo Kojima is afraid that ‘digital data will no longer be owned by individuals’ and that access to art that we love ’may suddenly be cut off‘

“The Commission considers that at this stage it cannot propose a legal obligation to keep videogames playable after they stop being provided commercially. This is due, also, to existing intellectual property rights. Under EU copyright law, rights holders enjoy exclusive rights over their creations.”

Players are (quite rightly) worried that without physical media their beloved games, or any kind of art, can be ripped away from them at a moment’s notice. “We will not be able to freely access the movies, books, and music that we have loved,” Kojima adds. “I would be a have-not. That’s what I’m afraid of. This is not greed.”

The Sun may not engulf Earth after all, scientists say

The Earth may not be engulfed by the expanding fireball of the dying sun, which has long been assumed to be our home planet’s ultimate fate, according to scientists.

Don’t worry: This is not expected to happen for another 5 billion years, long after all life on Earth has been wiped out.

When the sun burns through all of the hydrogen in its core, it will go through two immense expansion phases: first becoming a red giant, then, when its helium is spent, an “AGB” star.

Wet coffee grounds turned into high-grade solid fuel in just 90 seconds

A research team at the Korea Institute of Geoscience and Mineral Resources (KIGAM) has developed a technology that converts wet spent coffee grounds directly into high-quality biochar in just 90 seconds, with no drying or oil removal required. The breakthrough offers a fast, energy-efficient path to turning high-moisture organic waste into valuable fuel and carbon materials. The study, led by Dr. Taejun Park in collaboration with GodTech Co., Ltd., was published in the Chemical Engineering Journal, one of the world’s leading journals in chemical engineering.

Addressing a growing waste challenge Every year, global coffee consumption generates more than 10 million tons of spent coffee grounds, most of which end up in landfills or are incinerated, releasing greenhouse gases and polluting the environment.

Spent coffee grounds hold real energy potential, but their high moisture content has long been a barrier. Converting them into fuel or carbon products typically requires energy-intensive predrying, making large-scale resource recovery economically impractical.

Quantum properties of multimode light observed despite extreme losses

Quantum properties of light are extremely delicate. When researchers attempt to measure them, even small losses on the way to a detector can make them invisible, limiting their use outside carefully controlled environments. A collaborative team of researchers involving scientists at the Max Planck Institute for the Science of Light (MPL) has shown a new way to measure several quantum channels of light at the same time and reveal their entanglement, even when almost all of the light is lost before reaching the detector. The results, recently published in Nature Communications, open new possibilities for scalable quantum technologies.

Anyone who has used an old radio or television is familiar with noise in the sound or picture. These are random fluctuations that distort the transmitted information. Light behaves in a similar way. It also exhibits noise, appearing as fluctuations of the electromagnetic field. Even perfect laser light has such fluctuations, known as shot noise.

Single ion maps 3D electromagnetic fields above chips with record sensitivity

Researchers at ETH Zurich have developed a method that uses a single ion to detect electromagnetic fields above a surface and to create a three-dimensional map of them. In the future, this approach can be used to improve chips for quantum computers and quantum sensors.

Single electrically charged atoms—ions—have been successfully used for some time as quantum bits in quantum computers and quantum sensors. Unlike the bulky ion traps of the early years, there are now miniaturized chips in which ions can be trapped and manipulated only a hair’s breadth above the surface of the chip. This has many advantages, but also one decisive drawback: Noisy electromagnetic fields coming from the chip itself can severely impair the sensitive quantum states of the ions and hence the performance of the computer or sensor.

A team of researchers led by Jonathan Home, a professor at the Institute for Quantum Electronics at ETH Zurich, has now developed a technique that allows them to create a very precise three-dimensional map of electric and magnetic fields very close to the surface of the chip. In the future, materials for chip production can be better optimized and tested for their suitability for use in quantum applications. The results of their research were recently published in Science Advances.

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