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Scientists are exploring a new solar material called BaZrS3. This compound uses common elements found on Earth. It belongs to a family known as chalcogenide perovskites. These materials show promise for turning sunlight into electricity. Unlike other similar materials, BaZrS3 does not glow brightly when exposed to light. This trait makes it tricky to study. Researchers wanted to learn more about why this happens. They focused on tiny flaws inside the material called defects. To test this, they grew thin layers of BaZrS3 using a special machine called pulsed laser deposition. Then they heated the samples with sulfur gas. The mix of chemicals changed based on how much barium and zirconium was used. They tried different heat levels and gas amounts. At room temperature, the material did not

Scientists face a big problem when they study how energy might change. Computer models spit out hundreds of possible futures. That's way too many for anyone to read through. Each one looks different. Some show lots of solar power. Others keep using gas. Trying to spot patterns feels like finding a needle in a haystack. A team found a clever shortcut. They borrowed a tool from machine learning called decision trees. Think of it like a flowchart that asks yes or no questions. It sorts messy data into clear groups. The result? A handful of simple stories that still match the math. No more drowning in spreadsheets. First they tested it on a thousand global scenarios. The tree boiled them down to three main paths. One leans hard on heating changes. Another pushes industry to go electric. The

Oral health problems among Indigenous peoples in Brazil are not about their biology. They come from racism, a system that has been in place since colonial times. This system denies rights and creates unequal treatment. When we look at teeth and gums, we see the marks of exclusion, state control, violence and loss of land. These mouth issues act like a mirror for citizenship. They show lifelong gaps that pass from one generation to the next. In Brazil and worldwide, neoliberal policies have made the situation worse, increasing disease and cutting access to care. Racism is not just a personal bias; it is built into the structures that shape daily life. To change this picture we need actions that cross many sectors. Laws, schools and health services must be reshaped. Power has to shift so t

Many veterans who end up behind bars struggle with tough mental health issues. They often face trauma, guilt, anger, and sadness at higher rates than other inmates. A special program was created to use their shared military background as a source of strength. The idea is that fellow veterans can support each other better when they understand the same experiences. Researchers picked two California prisons to compare the program. One prison, the Correctional Training Facility, was building a veteran‑only living unit called the Veterans Hub. There, inmates who joined the special activities were tracked for eight months. The other prison, San Quentin, offered regular veteran services but not the dedicated hub. Both groups filled out surveys that asked about trauma exposure, PTSD, moral injury

Moving your body daily is one of the simplest ways to feel better overall. It isn’t just about muscles or stamina—your brain benefits too. Regular activity supports the systems that help you concentrate, recall information, and even feel more confident. Studies suggest that staying active can slow the mental wear-and-tear that sometimes comes with age. Different types of exercise give different perks. Running or cycling boosts your heart’s oxygen capacity, which shows up as a higher VO2max number. Lifting weights or doing resistance work keeps muscles and bones strong. Even moderate movement, done consistently, can improve how your heart, lungs, and nerves work together. You don’t have to overdo it to see real gains. Science has looked at exercise from many angles. Researchers run contro

Knee surgery has changed a lot for people with patellofemoral osteoarthritis where only the kneecap side of the joint wears out. Instead of a full replacement surgeons can now target just that spot and robotic arms help make the placement super accurate. This study checks how those robotic assisted surgeries hold up in the months right after the operation. The team followed 30 people which made 35 knees total all getting the robotic procedure between November 2021 and October 2024. Their average age was roughly 61 and most had significant wear classified as grade three or four on a standard scale. They checked in for at least a year with the average follow up sitting around 15 and a half months. Outcomes were mostly positive. Only three knees needed a second operation and just two of tho