This Wearable Device Monitors Health by Sensing the Gases Passing Through Your Skin

Credit: John A. Rogers / Northwestern University.Your skin is breathing. This wearable gas sensor can measure it.Northwestern University researchers have developed the first wearable device for measuring gases emitted from and absorbed by the skin.By analyzing these gases, the device offers an entirely new way to assess skin health, including monitoring wounds, detecting skin infections, tracking hydration levels, quantifying exposure to harmful environmental chemicals and more.The new technology comprises a collection of sensors that precisely measure changes in temperature, water vapor, carbon dioxide (CO2) and volatile organic compounds (VOCs), which each give valuable insight into various skin conditions and overall health. These gases flow into a small chamber within the device that hovers above the skin without actually touching it. This no-contact design is particularly useful for gathering information about fragile skin without disturbing delicate tissues.“This device is a natural evolution of our lab’s wearable electronic devices that collect and analyze sweat,” said Northwestern’s John A. Rogers, who co-led the study. “In that case, we were analyzing sweat to learn about the wearer’s overall health. While useful, that method requires pharmacological stimulation of sweat glands or exposure to a hot, humid environment. We...

Read More........→May 05, 2025

Scientists use AI to reveal the neural dynamics of human conversation

New York, (IANS): By combining artificial intelligence (AI) with electrical recordings of brain activity, researchers have been able to track the language exchanged during conversations and the corresponding neural activity in different brain regions, according to a new study.The team from Department of Neurosurgery at Massachusetts General Hospital in the US investigated how our brains process language during real-life conversations.“Specifically, we wanted to understand which brain regions become active when we're speaking and listening, and how these patterns relate to the specific words and context of the conversation,” said lead author Jing Cai in a paper published in Nature Communications.They employed AI to take a closer look at how our brains handle the back-and-forth of real conversations. The team combined advanced AI, specifically language models like those behind ChatGPT, with neural recordings using electrodes placed within the brain.This allowed them to simultaneously track the linguistic features of conversations and the corresponding neural activity in different brain regions.“By analysing these synchronised data streams, we could map how specific aspects of language–like the words being spoken and the conversational context–were represented in the dynamic patterns of brain activity during conversation,” said Cai.They...

Read More........→April 23, 2025

Scientists Discover Mechanisms That Prevent Autoimmune Diseases and Win $600,000 Crafoord Prize

Autoimmune researcher Professor Goodnow Christopher – Photo by Garvan Institute of Medical ResearchTwo researchers in the US and Australia have discovered important mechanisms that prevent B cells from attacking the body’s own tissues in autoimmune diseases like arthritis, lupus, and multiple sclerosis—and in the process have won a prestigious prize.Normally, the body’s immune system protects us from viruses, bacteria, and foreign substances. However, in autoimmune diseases, the immune system starts attacking tissues in the body instead.Researchers had long tried to discover the cause of autoimmune diseases. But, Christopher Goodnow and David Nemazee, independently of each other, adopted a new approach.They asked why we do not all develop these diseases. Their focus was on B cells which, together with white blood cells and T cells, are the building blocks of our complex immune system.“They have given us a new and detailed understanding of the mechanisms that normally prevent faulty B cells from attacking tissues in the body, explaining why most of us are not affected by autoimmune diseases,” says Olle Kämpe, member of the Royal Swedish Academy of Sciences and chair of the Crafoord Prize committee that awarded the pair 6 million Swedish kronor ($600,000).Neutralize B cellsIn recent years, physicians have started to experiment by...

Read More........→April 07, 2025

Early-onset Alzheimer’s: new drug shows promise in slowing the disease

The drug also caused a notable decrease in amyloid plaque buildup, which is a hallmark of Alzheimer’s disease. ART-ur/ Shutterstock Rahul Sidhu, University of SheffieldAlzheimer’s disease is usually associated with old age. But around 5%-10% of all Alzheimer’s cases occur in people under the age of 65. Early-onset Alzheimer’s disease progresses more rapidly and often strikes people in the prime of their lives. Treatment options remain limited. But new data from a recent clinical trial suggests that a previously discontinued experimental drug, called gantenerumab, could help. The study found that gantenerumab reduced the buildup of amyloid plaques – one of the hallmarks of Alzheimer’s disease – in the brain. This may help slow cognitive decline in people with early-onset Alzheimer’s. Early-onset Alzheimer’s is often linked to genetic mutations in three specific genes. These mutations cause the brain to produce excessive amounts of amyloid beta, a protein that clumps together to form plaques. These plaques disrupt brain function, leading to memory loss. Early-onset Alzheimer’s advances quickly – and the rapid decline is devastating. That’s why researchers are racing to find treatments that can slow the disease. The recent clinical trial was a randomised, placebo-controlled study to evaluate gantenerumab’s effects on people...

Read More........→April 04, 2025

Man Lives for 100 Days with Artificial Titanium Heart in Successful New Trial

The Total Artificial Heart, made of titanium – credit BiVACORIn Australia, a man was kept alive for 100 days on an artificial heart made of titanium while a donor heart was eventually found.This is the longest-ever period that a man has been kept alive by an artificial heart, giving its developers encouragement that it can play a major role in supporting waiting list patients whose hearts are failing.5 months ago, a man in his forties received the BiVACOR Total Artificial Heart (TAH) after experiencing heart failure. The TAH has no pumps, valves, or other moving parts susceptible to wear. Instead, magnetic levitation permits a single rotor to pump blood to the body through both ventricles.He was able to leave the hospital even, before a donor heart was found that was transplanted successfully.In a statement, BiVACOR, St. Vincent’s Hospital where the surgery was carried out, and Monash University which provided the grant funding for the development of the TAH, said that the result is a sign the artificial heart could potentially offer a long-term option for people suffering from heart failure.BiVACOR’s founder, Australian bioengineer Daniel Timms, who invented the device, said it was “exhilarating to see decades of work come to fruition.”“The entire BiVACOR team is deeply grateful to the patient and his family for placing their trust...

Read More........→April 01, 2025

Bug drugs: bacteria-based cancer therapies are finally overcoming barriers

Lightspring/Shutterstock Justin Stebbing, Anglia Ruskin UniversityImagine a world where bacteria, typically feared for causing disease, are turned into powerful weapons against cancer. That’s exactly what some scientists are working on. And they are beginning to unravel the mechanisms for doing so, using genetically engineered bacteria to target and destroy cancer cells. Using bacteria to fight cancer dates back to the 1860s when William B. Coley, often called the father of immunotherapy, injected bacteria called streptococci into a young patient with inoperable bone cancer. Surprisingly, this unconventional approach led to the tumour shrinking, marking one of the first examples of immunotherapy. William Coley (centre), a pioneer of bug drugs. Wikimedia CommonsOver the next few decades, as head of the Bone Tumour Service at Memorial Hospital in New York, Coley injected over 1,000 cancer patients with bacteria or bacterial products. These products became known as Coley’s toxins. Despite this early promise, progress in bacteria-based cancer therapies has been slow. The development of radiation therapy and chemotherapy overshadowed Coley’s work, and his approach faced scepticism from the medical community. However, modern immunology has vindicated many of Coley’s principles, showing that some cancers are indeed very sensitive...

Read More........→March 24, 2025

India now OpenAI’s second largest market, Altman says

FILE PHOTO: OpenAI CEO Sam Altman speaks during a press conference with Kakao CEO Chung Shina to announce partnerships on AI services, in Seoul, South Korea, February 4, 2025. REUTERS/Kim Hong-Ji/File Photo(Reuters) -OpenAI CEO Sam Altman on Wednesday said India is now OpenAI’s second-largest market by number of users, which have tripled in the past year.Altman met with India’s IT Minister Ashwini Vaishnaw and discussed India’s plan of creating a low-cost AI ecosystem. Altman lauded the country’s rapid AI adoption and growing ambitions.Vaishnaw posted on X that he had a “super cool discussion” with Altman on India’s “strategy of creating the entire AI stack – GPUs, model, and apps” and that OpenAI was willing to collaborate on all three.“I think India should be doing everything. I think India should be one of the leaders of the AI revolution”, Altman said, a reversal from last year when he cast doubt on whether the country could build a substantial model in the OpenAI space with a $10 million budget.It was Altman’s first visit since 2023 to India, where his company faces legal challenges.Vaishnaw last week praised Chinese startup DeepSeek for shaking up the sector with its low-cost AI assistant, likening its frugal approach to his government’s efforts to build a localised AI model.“Our country sent a mission to the moon at a fraction...

Read More........→March 18, 2025

2025 will see huge advances in quantum computing. So what is a quantum chip and how does it work?

Motion Loop/Shutterstock Muhammad Usman, CSIROIn recent years, the field of quantum computing has been experiencing fast growth, with technological advances and large-scale investments regularly making the news. The United Nations has designated 2025 as the International Year of Quantum Science and Technology. The stakes are high – having quantum computers would mean access to tremendous data processing power compared to what we have today. They won’t replace your normal computer, but having this kind of awesome computing power will provide advances in medicine, chemistry, materials science and other fields. So it’s no surprise that quantum computing is rapidly becoming a global race, and private industry and governments around the world are rushing to build the world’s first full-scale quantum computer. To achieve this, first we need to have stable and scalable quantum processors, or chips. What is a quantum chip? Everyday computers – like your laptop – are classical computers. They store and process information in the form of binary numbers or bits. A single bit can represent either 0 or 1. By contrast, the basic unit of a quantum chip is a qubit. A quantum chip is made up of many qubits. These are typically subatomic particles such as electrons or photons, controlled and manipulated by specially designed electric and...

Read More........→March 11, 2025

Indian American engineers discuss advancements in hot technologies

Debu Chatterjee, CEO Konfer and Mihir Shukla, CEO Automation Anywhere discussing responsible AI and engaging the audience. ALL PHOTOS: ASEIThe American Society of Engineers of Indian Origin (ASEIUSA.org), a non-profit founded in 1983, convened an AI Summit February 17, 2025, in Santa Clara, California, attended by a number of academics, researchers, authors, speakers and industry innovators.Held at the UCSC Silicon Valley campus, the event also marked the 10-year anniversary of ASEI’s Silicon Valley chapter.The Conference covered a wide variety of subjects in Artificial Intelligence.India’s Consul General in San Francisco Dr Srikar Reddy addressing the ASEI audience at AI meeting, Feb. 15, 2025. PHOTO: ASEIAfter a warm welcome by co-hosts UCSC Dean P.K. Agarwal,and ASEI Silicon Valley President Piyush Malik, setting the stage for the event, the Consul General (CG) of India in San Francisco Dr. Srikar Reddy, shared his perspectives on India’s digital economy, the strength of Silicon Valley Indian community and how the Indian government is investing in and leveraging AI for improving lives and livelihoods of citizens. Reddy alluded to Prime Minister Modi’s recent speeches at AI Action Summit in Paris and recent visit to the US.Opening the program with a classical Indian music performance by a young high school STEM student Sohum Gupta,...

Read More........→February 26, 2025

An AI system has reached human level on a test for ‘general intelligence’. Here’s what that means

OLaLa Merkel / Shutterstock Michael Timothy Bennett, Australian National University and Elija Perrier, Stanford UniversityA new artificial intelligence (AI) model has just achieved human-level results on a test designed to measure “general intelligence”. On December 20, OpenAI’s o3 system scored 85% on the ARC-AGI benchmark, well above the previous AI best score of 55% and on par with the average human score. It also scored well on a very difficult mathematics test. Creating artificial general intelligence, or AGI, is the stated goal of all the major AI research labs. At first glance, OpenAI appears to have at least made a significant step towards this goal. While scepticism remains, many AI researchers and developers feel something just changed. For many, the prospect of AGI now seems more real, urgent and closer than anticipated. Are they right? Generalisation and intelligence To understand what the o3 result means, you need to understand what the ARC-AGI test is all about. In technical terms, it’s a test of an AI system’s “sample efficiency” in adapting to something new – how many examples of a novel situation the system needs to see to figure out how it works. An AI system like ChatGPT (GPT-4) is not very sample efficient. It was “trained” on millions of examples of human text, constructing probabilistic “rules”...

Read More........→February 19, 2025

Supersonic jets are making a comeback – but despite the hype, don’t expect to book yet

Rendering of Boom Supersonic’s proposed Overture supersonic airliner. Boom Supersonic Chris James, The University of QueenslandLate last week, American company Boom Supersonic flew faster than the speed of sound with its XB-1 supersonic demonstrator aircraft. It’s now the first piloted non-military aircraft to break the sound barrier since the Concorde was retired from service in 2003. It’s the first step in Boom’s ambitious goal to have supersonic airliners carry passengers by 2029. But what exactly is supersonic travel? There are good reasons why it’s not more common, despite the hype. Boom Supersonic’s XB-1 supersonic demonstrator aircraft during its 11th test flight where it became the first civilian aircraft to fly supersonically since the Concorde. Boom SupersonicWhat is supersonic flight? The Mach number is defined as a plane’s speed divided by the speed that sound waves move through the air. To “break the sound barrier” means to fly faster than the speed of sound, with Mach numbers greater than 1. The Mach number is an important ratio: as a plane flies, it disturbs the air in front of it. These disturbances move at the speed of sound. In supersonic flight these disturbances combine to form shock waves around the vehicle. When people say you can see a fighter jet before you hear it, they’re referring to supersonic...

Read More........→February 03, 2025

‘Digital doppelgangers’ are helping scientists tackle everyday problems – and showing what makes us human

cybermagician/Shutterstock Alicia (Lucy) Cameron, CSIRO and Sarah Vivienne Bentley, CSIROAs rising seas lap at its shore, Tuvalu faces an existential threat. In an effort to preserve the tiny island nation in the middle of the Pacific Ocean, its government has been building a “digital twin” of the entire country. Digital twins are exactly what they sound like – a virtual double or replica of a physical, real-world entity. Scientists have been creating digital twins of everything from molecules, to infrastructure, and even entire planets. It’s also now possible to construct a digital twin of an individual person. In other words, a “digital doppelganger”. A doppelganger is someone who looks spookily like you but isn’t. The word originated in German, and literally means a “double walker”. A number of industries are now using digital doppelgangers for a range of reasons. These include enhancing athletic performance, offering more personalised healthcare and improving workplace safety. But although there are benefits to this technology, there are significant risks associated with its development. Having digital doppelgangers also forces us to reflect on which of our human attributes can’t be digitally replicated. Modelling complex systems The development of digital twins has been enabled by advances in environmental sensors,...

Read More........→January 31, 2025