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Solar energy is rapidly becoming one of the most important sources of clean electricity in the world. Solar cells, which convert sunlight directly into electricity, are now widely used in homes, businesses, industries and large power plants. By producing electricity without burning coal, oil or gas, solar technology is helping countries reduce their dependence on fossil fuels and cut carbon emissions. Most solar panels used today are made from silicon. Silicon solar cells are reliable and efficient, but manufacturing them can be expensive and energy-intensive. For this reason, scientists and engineers are searching for alternative materials that could make solar power cheaper and easier to produce. One of the most promising alternatives is a group of crystalline materials known as perovskites . Researchers believe that perovskite solar cells (PSCs) could eventually offer a lower-cost and highly efficient alternative to traditional silicon-based solar cells. Now, researchers at Nanjing ...

What if black holes were born even before the first stars and galaxies existed? Scientists believe this may have happened just moments after the Big Bang. These mysterious objects are called primordial black holes (PBHs) , and they could help solve some of the biggest mysteries in the Universe, including the nature of dark matter . Now, a new study by physicist Cristian Joana has revealed something surprising. Using powerful computer simulations based on Einstein's theory of General Relativity, he found that the early Universe may have created primordial black holes in three different ways , not just one as previously thought. The discovery could change how scientists predict the number of primordial black holes in the Universe and improve our understanding of the Universe's earliest moments. What Are Primordial Black Holes? Primordial black holes are different from the black holes we usually hear about. Most black holes form when very massive stars run out of fuel and collaps...

Hydrogen peroxide (H₂O₂) is one of the world's most important industrial chemicals. It is used to disinfect medical equipment, clean semiconductor chips, bleach paper, treat wastewater, and support many chemical manufacturing processes. Although it is widely used, the way it is produced today is far from environmentally friendly. Traditional manufacturing requires large factories, consumes huge amounts of energy, and involves complex chemical processes. Now, researchers from South Korea and the United States have developed an innovative solution that could transform hydrogen peroxide production. A research team led by Professor Sunghak Park from the Department of Future Energy Engineering at Sungkyunkwan University , together with scientists from Korea University and Northwestern University , has created a new electrochemical system that can produce large amounts of eco-friendly hydrogen peroxide without using any external power supply . Their groundbreaking research was publishe...

Pulsars are some of the most mysterious objects in the universe. They are the tiny, incredibly dense remains of massive stars that exploded in powerful supernova explosions. Even though a pulsar is only about 20 kilometers wide, it can contain more mass than our Sun. Pulsars spin very fast, and some rotate hundreds of times every second. Because of this regular spinning, scientists often call them the most accurate natural clocks in the universe . However, these cosmic clocks sometimes behave strangely. Instead of slowing down smoothly over time, a pulsar suddenly speeds up for a short time. This unexpected event is called a pulsar glitch . Scientists have been trying to understand why these glitches happen for nearly 50 years. Now, a new study by Anantharaman and his research team has brought scientists one step closer to solving this mystery. Using one of the largest computer simulations ever created for neutron stars, the team discovered that glitches may happen because of a combin...

Imagine wearing a robotic hand that can actually "feel" when your skin stretches, just like a real human hand. Or picture a prosthetic limb that sends natural nerve-like signals to the brain while using very little power. This futuristic idea is now much closer to reality thanks to a breakthrough by researchers led by Lee, who have successfully created a 3D-printed artificial sensory nerve that mimics one of the body's most important touch sensors. Their innovation combines neuromorphic technology , 3D printing , and advanced smart materials to create an artificial nerve capable of detecting stretching and converting it into electrical signals similar to those used by the human nervous system. The technology could transform prosthetic limbs, soft robots, wearable electronics, and future human-machine interfaces. What Are Neuromorphic Systems? Neuromorphic systems are electronic devices designed to work like the human brain and nervous system. Instead of processing infor...

Imagine wearing a ring that does much more than count your steps or monitor your heart rate. What if it could continuously track important health markers like glucose, ketones, vitamin C, lactate, uric acid, and even alcohol levels—all from your sweat, without needles or painful blood tests? That vision is becoming a reality thanks to researchers at the University of California San Diego (UC San Diego) . Engineers have developed a revolutionary smart ring that can continuously monitor multiple chemical biomarkers from finger sweat in real time. Their groundbreaking research, published in Nature Communications , introduces what they believe is the world's first fully integrated smart ring capable of daily biochemical monitoring. This innovation could transform the way people manage chronic diseases such as diabetes while also helping millions monitor their overall health more conveniently. A Smart Ring That Goes Beyond Fitness Tracking Today's smart rings have become increasingl...

For centuries, humans have admired the effortless way birds fly. A bird can land almost anywhere, rest for a while, and then suddenly jump into the air before spreading its wings and flying away. Scientists have long dreamed of giving flying robots the same ability. Now, a team of researchers led by Li has taken a major step toward making that dream a reality. The researchers have developed a large flapping-wing robot, called an ornithopter, that can jump into the air, take off without human assistance, land safely, and prepare itself for another flight. This remarkable achievement could change the future of aerial robotics, opening new possibilities for rescue operations, environmental monitoring, surveillance, and scientific exploration. What Is an Ornithopter? An ornithopter is a flying machine that flies by flapping its wings like a bird instead of using spinning propellers like drones or engines like airplanes. Unlike traditional drones, ornithopters are: Much quieter during f...