Tag: science

Korean Fusion Reactor Breaks Record, Staying 7 Times Hotter Than The Sun’s Core

Korea Superconducting Tokamak Advanced Research, or KSTAR, is one of the most advanced test fusion reactors on the planet. Nicknamed the Korean artificial sun, it has now demonstrated sustained fusion temperature for almost a minute and the ability to contain extremely hot plasma for over 100 seconds.

Fusion is what powers stars, but in stars, it happens at lower temperatures than we need to do it here on Earth. That’s because gravity is keeping everything packed together so fusion is more likely to happen. So the temperature required on Earth for a Tokamak system – which is a donut-shaped reactor – is about seven times the temperature at the core of the Sun: 100 million °C (180 million °F).

KSTAR first reached this threshold in 2018 but only for 1.5 seconds. A year later, they were able to keep the plasma that hot for 8 seconds, increasing it to 20 seconds in 2020. The last record was in 2021, when the plasma was kept that hot for half a minute. Since then, the team at the Korea Institute of Fusion Energy (KFE) has upgraded the device by building a new tungsten divertor environment and they have pushed the temperature for longer.

Now, KSTAR can sustain 100 million °C for 48 seconds – and it can keep hot plasma in the high-confinement mode (also known as H-mode) for 102 seconds. The goal is to achieve 300 seconds of burning plasma by the end of 2026. 

“Despite being the first experiment run in the environment of the new tungsten divertors, thorough hardware testing and campaign preparation enabled us to achieve results surpassing those of previous KSTAR records in a short period,” Dr Si-Woo Yoon, Director of the KSTAR Research Center, said in a statement.

“To achieve the ultimate goal of KSTAR operation, we plan to sequentially enhance the performance of heating and current drive devices and also secure the core technologies required for long-pulse high performance plasma operations.”

Keep reading

Scientists Are Searching the South Pole to See if Quantum Gravity Actually Exists

Within physics, there are two enormous foundational systems—quantum mechanics and general relativity—that have been like Macs and PCs for decades. Over time, scientists on both sides have worked toward the other side, because anyone who wants to explain the entire universe has to make the two foundations work together. And, like any decent computer lab, a unifying theory has to be truly cross-platform.

In new research, researchers from the University of Copenhagen’s Niels Bohr Institute (NBI)—alongside 58 other member universities— revealed the secrets of 300,000 neutrinos they studied at the South Pole. Their paper (published in Nature Physics) is one step down a road that they hope will lead to quantum gravity. This hypothesized force, if it’s ever demonstrated in real life measurements, could be the physics dongle that adapts general relativity to quantum mechanics at last.

Keep reading

8 Extremely Unusual Events That Will Happen During The Month Of April

When is the last time that there was so much buzz about one month?  As we enter April, there is so much anticipation in the air, and it isn’t just because of the Great American Eclipse on April 8th.  In recent days, I have heard from so many people that feel like something really big is about to happen.  I can feel it too.  It is almost as if we are all holding our breath as we wait for the next shoe to drop.  Chaos is threatening to erupt all over the globe, and meanwhile signs in the heavens are literally screaming at us to pay attention.  The following are 8 extremely unusual events that will happen during the month of April…

Keep reading

Scientists Uncover Mechanism Viruses Use to Cause Cancer

Viral infections are thought to be a central cause of between 10 to 20 percent of cancers worldwide, representing a significant portion of the global cancer burden.

A recent discovery may further our understanding of how viruses cause cancer.

Researchers from the Cleveland Clinic uncovered one of the mechanisms that a type of virus called Kaposi sarcoma-associated herpesvirus (KSHV) uses to induce cancer.

The study, published last month in Nature Communications, found that the KSHV virus activated a specific pathway responsible for cell metabolism and the way cells grow and multiply. Using current U.S. Food and Drug Administration (FDA)-approved breast cancer drugs, they were able to reduce the replication of the virus, stop the progression of the lymphoma, and shrink existing tumors in preclinical models.

Jun Zhao, of the Cleveland Clinic Florida Research and Innovation Center, who holds a doctorate in genetic, molecular, and cellular biology is the study’s lead author.

“Our findings have significant implications: viruses cause between 10% to 20% of cancers worldwide, a number that is constantly increasing as new discoveries are made. Treating virus-induced cancers with standard cancer therapies can help shrink tumors that are already there, but it doesn’t fix the underlying problem of the virus,” Mr. Zhao explained in a news release. “Understanding how pathogens transform a healthy cell into a cancer cell uncovers exploitable vulnerabilities and allows us to make and repurpose existing drugs that can effectively treat virus-associated malignancies.”

Keep reading

CERN Particle Accelerator To Go Live During Solar Eclipse After Two Year Hiatus

The European Organization for Nuclear Research’s CERN particle accelerator will be used to search for hidden particles as the upcoming April 8 solar eclipse takes place.

The machine, a Large Hadron Collider (LHC), smashes protons into each other to bust them open and study the subatomic particles inside them. 

During next month’s eclipse, the team of scientists will be trying to prove the existence of dark matter, which is estimated to make up around 28% of the universe despite never being seen.

While the LHC usually operates for one month every year, it has been two years since it was up and running after being turned off during Europe’s 2022 energy crisis.

Last week, scientists revealed a “ghost-like” structure had been discovered inside the particle collider.

Popular X account “Concerned Citizen” commented on CERN’s solar eclipse testing and also noted NASA will be launching rockets named after an Egyptian snake deity during the event.

The NASA mission, known as Atmospheric Perturbations around the Eclipse Path or APEP, was given the acronym in honor of the “serpent deity from ancient Egyptian mythology,” who was a “nemesis of the Sun deity Ra.”

Keep reading

Scientists Close To Controlling All Genetic Material On Earth

Scientists at the University of Pennsylvania’s Perelman School of Medicine have developed a new method to create human artificial chromosomes (HACs) that could revolutionize gene therapy and other biotechnology applications. The study, published in Science, describes an approach that efficiently forms single-copy HACs, bypassing a common hurdle that has hindered progress in this field for decades.

Artificial chromosomes are lab-made structures designed to mimic the function of natural chromosomes, the packaged bundles of DNA found in the cells of humans and other organisms. These synthetic constructs have the potential to serve as vehicles for delivering therapeutic genes or as tools for studying chromosome biology. However, previous attempts to create HACs have been plagued by a major issue: the DNA segments used to build them often link together in unpredictable ways, forming long, tangled chains with rearranged sequences.

The Penn Medicine team, led by Dr. Ben Black, sought to overcome this challenge by completely overhauling the approach to HAC design and delivery. “The HAC we built is very attractive for eventual deployment in biotechnology applications, for instance, where large-scale genetic engineering of cells is desired,” Dr. Black explains in a media release. “A bonus is that they exist alongside natural chromosomes without having to alter the natural chromosomes in the cell.”

To test their idea, the scientists turned to a tried-and-true workhorse of molecular biology: yeast. They used a technique called transformation-associated recombination (TAR) cloning to assemble a whopping 750 kilobase DNA construct in yeast cells. For context, that’s about 25 times larger than the constructs used in previous HAC studies. The construct contained DNA from both human and bacterial sources, as well as sequences to help seed the formation of the centromere.

The next challenge was to deliver this hefty payload into human cells. The team accomplished this by fusing the engineered yeast cells with a human cell line, a process that had been optimized in previous studies. Remarkably, this fusion approach proved to be much more efficient than the traditional method of directly transferring naked DNA into cells.

The results were stunning. Not only did the engineered HACs form successfully, but they did so with much higher efficiency compared to standard methods. Furthermore, these designer chromosomes were able to replicate and segregate properly during cell division, a key requirement for their long-term stability and functionality.

“Instead of trying to inhibit multimerization, for example, we just bypassed the problem by increasing the size of the input DNA construct so that it naturally tended to remain in predictable single-copy form,” explained Dr. Black.

But the researchers didn’t stop there. They also devised a clever way to visualize the HACs in their native, uncompacted state. By gently lysing the cells and using a special centrifugation technique, they were able to isolate the HACs away from the rest of the cellular DNA. This allowed them to confirm that the HACs maintained their single-copy status and circular topology, without any unwanted rearrangements or additions.

Keep reading

Scientists Have Traced the Lost Journey of Stonehenge’s Mysterious Megaliths

Stonehenge hasn’t given up all its mysteries just yet, even though scientists are working to cut them away one by one. The latest scientific effort has been pointed towards identifying the origin of a pair of unidentified sarsen stones—numbers 26 and 160—that don’t neatly fall into past identification efforts.

The results may stretch our understanding of Stonehenge a bit—76 miles southeast, to be more precise.

In a new study published in the Journal of Archaeological Science: Reports, researchers employed X-ray fluorescence spectrometry and inductively coupled plasma mass spectrometry to analyze the chemical composition of 54 sarsen stone fragments culled from the 5,000-year-old site. This allowed the team to show that stones located at England’s Stonehenge have a more diverse provenance than previously believed.

Over the past few years, scientists have traced the origins of many of the remaining 52 stones at the site. These stones fall into a variety of differing categories, some grouped together and others standing solitary. The bluestones of the inner circle come from the Preseli Hills in Wales, and a variety of the sarsen stones (made of silcrete sandstone) were traced in 2020 to roughly 19 miles from Stonehenge. That site, known as West Woods and located in the southeast Marlborough Downs, was a key source of stone for Neolithic people—both because of the widely available supply and natural access points.

Keep reading

Study Shows Colorado Marijuana Products Are Overstating THC Potency, With Researcher Citing Possible ‘Lab Fraud’

Cannabis flower sold in Colorado claims to contain much more tetrahydrocannabinol, or THC, than it actually does, according to my findings published in the peer-reviewed journal Plos One.

THC is the psychoactive compound that is derived when cannabis flower—commonly referred to as “bud”—is heated through smoking or cooking.

Why it matters

Accurate THC reporting is a linchpin for medical patients, recreational consumers and the overall integrity of the cannabis industry. Medical and recreational flower is generally the same—the difference is in testing requirements, price, taxes and purchase limits. Misleading potency information can disrupt medical dosages, misguide recreational users and erode trust in an industry striving for legitimacy.

Consumers often associate higher THC levels in cannabis flower with superior quality, potentially leading to overpayment for products that may not meet their expectations. This misconception can also create incentives for cultivators, testing labs and dispensaries to generate higher THC numbers—whether through cultivation techniques or through testing fraud.

Additionally, testing for toxins, pesticides and total yeast and mold can also fall victim to falsification. Recent reports reveal instances where labs in New York and other states have passed products that should have failed. This casts doubt on the credibility of the broader testing processes in place.

Keep reading

Scientists uncover evidence that microplastics are contaminating archaeological remains

Researchers have for the first time discovered evidence of microplastic contamination in archaeological soil samples.

The team discovered tiny microplastic particles in deposits located more than 7 meters deep, in samples dating back to the first or early second century and excavated in the late 1980s.

Preserving archaeology in situ has been the preferred approach to managing historical sites for a generation. However, the research team say the findings could prompt a rethink, with the tiny particles potentially compromising the preserved remains.

Microplastics are small plastic particles, ranging from 1 μm to 5 mm. They come from a wide range of sources, from larger plastic pieces that have broken apart, or resin pellets used in plastic manufacturing which were frequently used in beauty products up until around 2020.

The study, published in the journal Science of the Total Environment, was carried out by the universities of York and Hull and supported by the educational charity York Archaeology.

Professor John Schofield from the University of York’s Department of Archaeology, said, “This feels like an important moment, confirming what we should have expected: That what were previously thought to be pristine archaeological deposits, ripe for investigation, are in fact contaminated with plastics, and that this includes deposits sampled and stored in the late 1980s.

“We are familiar with plastics in the oceans and in rivers. But here we see our historic heritage incorporating toxic elements. To what extent this contamination compromises the evidential value of these deposits, and their national importance is what we’ll try to find out next.”

David Jennings, chief executive of York Archaeology, added, “We think of microplastics as a very modern phenomenon, as we have only really been hearing about them for the last 20 years, when Professor Richard Thompson revealed in 2004 that they have been prevalent in our seas since the 1960s with the post-war boom in plastic production,”

“This new study shows that the particles have infiltrated archaeological deposits, and like the oceans, this is likely to have been happening for a similar period, with particles found in soil samples taken and archived in 1988 at Wellington Row in York.”

The study identified 16 different microplastic polymer types across both contemporary and archived samples.

Keep reading

UNCANNY “ADAPTIVE DURABILITY” MAKES THIS STRANGE NEW MATERIAL STRONGER EVERY TIME YOU HIT IT

A team of engineers has invented a remarkable new material that gets stronger after an impact. The material’s creators also say it is electrically conductive, making it an ideal candidate for wearables or other electronics that are subject to repeated stresses and impacts.

Rather surprisingly, the inventors of their new material say the unique properties of corn starch, a common food additive, inspired their efforts.

“When I stir cornstarch and water slowly, the spoon moves easily,” explains Yue (Jessica) Wang, a materials scientist and the project’s principal investigator. “But if I lift the spoon out and then stab the mixture, the spoon doesn’t go back in. It’s like stabbing a hard surface.”

Scientists call this variable state adaptive durability, meaning the strength of the material shifts from a generally malleable state to a more durable one after a type of force is applied. Since many electronic devices such as mobile phones, tablet PCs, and electronic-based wearables could benefit from this type of durability, the researchers behind this latest invention wanted to see if they could imbue a relatively stretchable, malleable with this property. If successful, the resulting material could form the basis for electronic devices that don’t break like a dropped phone but instead actually become stronger through repeated use.

Unfortunately, most metals and other materials with high electronic conductivity are hard and brittle, presenting the developers of this seemingly ‘magical’ material with a formidable barrier. However, recent advances in material sciences have resulted in a class of materials called conjugated polymers that are both stretchy and conduct electricity. Still, these types of polymers, which ae composed of tiny, spaghetti-like molecules, tend to break apart under repeated stresses.

These circumstances motivated Professor Wang and her University of California, Merced engineering team to see if they could find a combination of conjugated polymers that were not only durable but became more sturdy with repeated uses.

First, the researchers combined a solution of four polymers. According to the release announcing the new material, this “poly (2-acrylamido-2-methylpropanesulfonic acid), shorter polyaniline molecules and a highly conductive combination known as poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS). After mixing them, Wang’s team spread the mixture out into a thin film and let it dry.

As expected, the resulting material was stretchy and electrically conductive. However, the real question was how the material would react to hitting it with a hammer. If it reacted like other conjugated polymers, it would weaken and break apart, leaving the researchers back where they started. However, when they tested their material, they found something else altogether.

“Rather than breaking apart from very rapid impacts, it deformed or stretched out,” they explain. “The faster the impact, the more stretchy and tough the film became.” Just like the cornstarch solution, the added force of the impacts resulted in adaptive durability, making a stronger, more durable material than the team started with.

Keep reading