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As the world moves toward a circular economy, recycled materials have become a symbol of sustainability. From plastic bottles to packaging and industrial products, manufacturers are increasingly using recycled materials to reduce waste and lower carbon emissions. However, a new study from researchers at Georgia Institute of Technology (Georgia Tech) suggests that simply using recycled content does not automatically make a product environmentally friendly. The research highlights an important truth: a product is only truly sustainable if it lasts long enough to perform its intended purpose. If recycled materials fail earlier than expected, they may require frequent repairs or replacements, increasing both environmental and financial costs. To address this challenge, researchers at Georgia Tech's Daedalus Lab have developed an innovative testing method that evaluates how materials behave under real-world conditions. Their findings, published in the journal Science Advances , could ...

 Dark matter is one of the biggest mysteries in modern science. Scientists believe it makes up about 85% of all the matter in the universe, yet no one has ever seen it directly. It does not produce, reflect, or absorb light, making it completely invisible. Even though we cannot see dark matter, scientists know it exists because of its strong gravitational effects on galaxies and other cosmic objects. For many years, scientists have used a model called the Lambda Cold Dark Matter (ΛCDM) model to explain how the universe formed and evolved. This model has been very successful in explaining many observations. However, it still cannot explain everything. One important problem is known as the σ₈ (sigma-eight) tension , where different observations of the universe give different results for how matter is spread across space. A new study by researchers Figueruelo, Anabella, and Pannia presents a fresh idea that could help solve this mystery. They have developed a new cosmological model ...

Wheels have played a major role in the development of mobile robots. They are simple, efficient, reliable, and capable of moving quickly across smooth surfaces. In places such as factories, warehouses, and paved environments, traditional wheels are often the best choice for robotic mobility. However, wheels have an important weakness: they struggle when the ground becomes uneven. A small step, raised platform, rock, or other obstacle can stop a wheeled robot completely. To overcome such challenges, engineers have developed legged robots and special wheel-leg systems called “whegs.” These designs can climb over larger obstacles, but they often require more complex mechanisms, consume more energy, and produce greater vibrations. Now, researchers led by Godden have introduced an innovative solution called the PaTS-Wheel , or Passively-Transformable Single-part Wheel . This unusual wheel is designed to combine the smooth, energy-efficient movement of a traditional wheel with the obstacle-...

Scientists in Italy have developed a remarkable new prosthetic foot that could change the future of mobility for people with limb loss and improve the way humanoid robots move. Called SoftFoot Pro , the motorless, flexible, and waterproof bionic foot has been designed to closely imitate the structure and movement of the human foot. Developed by researchers at the Istituto Italiano di Tecnologia (IIT–Italian Institute of Technology) in Genoa, SoftFoot Pro is designed to move naturally, adapt to uneven surfaces, and help users maintain balance on challenging terrain. Its innovative technology could also be used in the humanoid robots of the future. Unlike many conventional prosthetic feet, SoftFoot Pro does not rely on motors or complex electronic systems to adjust its shape. Instead, it uses a flexible mechanical design inspired by the natural anatomy of the human foot. Several of its technological solutions have already received two international patents, while a third patent is curre...

Wearable electronics are becoming an important part of modern technology. Smartwatches, fitness trackers, health-monitoring patches and smart clothing can continuously collect information from the human body. These devices can monitor signals such as heart rate, body movement, temperature and other important biological information. However, one major challenge remains: comfort . Many wearable electronic devices are worn directly on the skin for long periods. If they are not breathable, sweat and moisture can become trapped between the device and the skin. This can cause discomfort, skin irritation and reduced performance. Sweat can also interfere with electronic signals, making it more difficult for the device to accurately monitor the body. Scientists have now developed a new approach that could help solve these problems. Researchers led by Zhang and their team have introduced a new type of moisture-permeable wearable electronic system based on a technology called a three-dimensional...

Imagine wearing a shirt that can produce electricity from your own body. It could collect energy when you move, generate more power from your sweat, store that energy, and use it to run small electronic devices. Scientists are now working on this idea with a new technology called an e-textile microgrid . This system combines different energy-producing technologies directly into clothing. It is designed to power wearable electronics without depending on regular batteries, charging cables, sunlight, or other outside energy sources. The technology was developed by Yin and his research team. Their system can collect energy from two natural activities of the human body: movement and sweating . These two energy sources work together to make wearable electronics more reliable and efficient. Why Wearable Devices Need Better Power Sources Flexible electronics are becoming more common. Today, scientists are developing smart watches, health sensors, flexible displays, fitness trackers, and other ...

What if a wormhole could contain two rotating black holes? What if these black holes were connected to another region of spacetime by enormous cosmic strings? And what if the same wormhole also contained a naked ring singularity and paths that could theoretically allow time to loop back on itself? These are not ideas from a science-fiction movie. They are features of a remarkable mathematical solution of Einstein’s equations studied by physicist Gérard Clément . Clément examined a three-parameter stationary solution of the four-dimensional vacuum Einstein equations. In simple terms, this solution describes a very unusual spacetime structure: a Lorentzian wormhole containing two antipodal, co-rotating black holes . The solution is important because it combines several strange features of general relativity in one model. It includes a wormhole, two rotating black holes, cosmic strings, closed timelike curves, and, for almost all values of its parameters, a naked ring singularity. What Is...