Reference Terms
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Scanning electron microscope
The scanning electron microscope (SEM) is a type of electron microscope capable of producing high resolution images of a sample surface. Due to the manner in which the image is created, SEM images have a characteristic three-dimensional appearance and are useful for judging the surface structure of the sample.
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Health & Medicine News
September 7, 2025
Sep. 7, 2025 — A common hay fever nasal spray was found to cut COVID-19 infections by two-thirds in a clinical trial, while also reducing rhinovirus cases. Researchers believe it could serve as an easy, low-cost preventive measure, pending further ...
Sep. 6, 2025 — A newly discovered species of Bartonella bacteria in Brazil’s Amazon sand flies shares DNA similarities with dangerous Andean strains. Scientists stress the need for further studies to see if it can infect humans and spread beyond its known ...
Sep. 6, 2025 — Sucralose, the sugar substitute in many diet products, may weaken cancer immunotherapy by altering gut bacteria and reducing arginine levels needed for immune cells. But supplementation with arginine or citrulline could counteract this effect, ...
Sep. 6, 2025 — Hidden fat wrapped around organs, known as visceral fat, has now been linked to faster heart aging. Using AI and imaging from more than 21,000 people in the UK Biobank, scientists found that this invisible belly fat accelerates stiffening and ...
Sep. 6, 2025 — Getting a smartphone before age 13 may drastically increase the risk of poor mental health later in life, according to data from more than 100,000 people. Early use is linked to suicidal thoughts, aggression, and detachment, largely driven by social ...
Sep. 4, 2025 — A large Brazilian study following more than 12,000 middle-aged adults found that those consuming the most artificial sweeteners—commonly found in diet sodas, flavored waters, and processed snacks—experienced significantly faster declines in ...
Sep. 4, 2025 — Scientists have uncovered a surprising way Parkinson’s disease may start: tiny toxic proteins that punch holes in brain cells like revolving doors. Instead of causing instant collapse, these flickering pores slowly weaken the cells, which could ...
Sep. 4, 2025 — Meal timing shifts with age, and researchers found that eating breakfast later is tied to depression, fatigue, sleep problems, and an increased risk of death. Monitoring when meals are eaten could provide an easy health marker for aging ...
Sep. 4, 2025 — Scientists at the University of Bath have developed a simple three-minute brainwave test called Fastball EEG that can detect memory problems years before Alzheimer’s is typically diagnosed. Unlike traditional memory tests, it passively records ...
Sep. 3, 2025 — Metformin, the world’s most widely used diabetes drug, has long been recognized for its surprising range of benefits beyond lowering blood sugar, from reducing inflammation to lowering cancer risk. Yet its exact mechanism has remained unclear for ...
Sep. 3, 2025 — Overactivation of dopamine neurons may directly drive their death, explaining why movement-controlling brain cells degenerate in Parkinson’s. Mice with chronically stimulated neurons showed the same selective damage seen in patients, along with ...
Sep. 3, 2025 — Scientists have decoded the 3D structure of an ancient viral protein hidden in our DNA. The HERV-K Env protein, found on cancer and autoimmune cells, has a unique shape that could unlock new diagnostics and ...
Latest Headlines
updated 12:56 pm ET
Sep. 3, 2025 — Scientists at the University of Pennsylvania have shown for the first time that it’s possible to detect dormant cancer cells in breast cancer survivors and eliminate them with repurposed drugs, ...
Sep. 2, 2025 — Virginia Tech researchers are investigating how overloaded mitochondria in the brain’s memory circuits may spark early Alzheimer’s damage. Their work focuses on calcium signaling and how it might ...
Sep. 2, 2025 — A long-term study following insomnia patients treated with cannabis-based medical products revealed sustained improvements in sleep quality, mood, and pain management over 18 months. Most ...
Sep. 2, 2025 — High-ventilation breathwork with music can evoke psychedelic-like states, shifting blood flow in the brain and reducing negative emotions. Participants experienced unity and bliss, pointing to a ...
Sep. 2, 2025 — Once a universal feature of human psychology, the “unhappiness hump” in midlife has disappeared, replaced by a new trend: mental health is worst in youth and improves with age. Data from the ...
Sep. 2, 2025 — Japanese scientists have developed ADRIANA, a non-opioid painkiller that could provide powerful relief without the dangers of addiction. With successful trials already completed, large U.S. studies ...
Sep. 2, 2025 — A sweeping review of nearly 100 studies has raised concerns about the mental health impacts of high-potency cannabis products. Researchers found strong links to psychosis, schizophrenia, and cannabis ...
Sep. 1, 2025 — Scientists are racing to improve weight loss treatments beyond drugs like Ozempic and Wegovy, which are effective but plagued by nausea, bone loss, and weight regain. Tufts University chemists have ...
Sep. 1, 2025 — Researchers have uncovered why smell often fades early in Alzheimer’s: the brain’s immune cells dismantle key nerve connections between the olfactory bulb and brainstem. Membrane changes in ...
Sep. 1, 2025 — A single RSV vaccine dose is proving to be a powerful shield for older adults, significantly reducing hospitalizations and severe illness over two ...