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Phys.org / TESS discovers a rare brown dwarf orbiting a massive, aging star
For decades, astronomers lumped brown dwarfs into a single category defined by mass alone—too big to be classified as planets but too small to become stars. However, this definition ignores the two very different mechanisms ...
Phys.org / Two oceans, one country—and 20 times more sharks in the prehistoric Pacific
How many sharks should a coral reef have? It sounds like a simple question, but almost nowhere on Earth is there a reef that has not at some time been fished or otherwise affected by humans, so there is no yardstick against ...
Phys.org / India faces rising uncompensable heat stress, especially during monsoon season
Animals struggle to cool down in extreme heat and high humidity, and heat stress is rising in many regions around the world. This is especially true for people in tropical countries, including populous India. In a new paper ...
Phys.org / Layered nano-biohybrid uses sunlight, air and water to make hydrogen peroxide
A research team led by the U.S. Department of Energy's (DOE) Argonne National Laboratory has developed a new material that combines inorganic material with biological components to produce hydrogen peroxide more efficiently.
Phys.org / Fulfilling friendships linked to better health and well-being across 22 countries
Fulfilling friendships and close social relationships are strongly linked to excellent physical and mental health, finds a substantial global study published in the Journal of Mental Health.
Medical Xpress / Brain cancer cells exploit normal nerve signaling to multiply and invade, new study finds
Gliomas are malignant brain tumors that originate from glial cells, which do not produce electrical impulses like neurons but instead support neurons by maintaining their structure and function. They are the most common form ...
Phys.org / A new category of heat waves is melting western US snowpack faster
Heat waves are not all created equal. While some bring dry heat that rapidly dries out crops, others carry a lot of moisture that can prevent sweat from evaporating off the skin. In new research published in the journal Science ...
Medical Xpress / A new target in the gut for reducing Alzheimer's risk
A compound produced by bacteria in many people's digestive tracts increases the risk of developing Alzheimer's disease and speeds cognitive decline in dementia patients, making it a potential target for a treatment that could ...
Phys.org / Synchronized star pairs unleash radio bursts via a Jupiter-Io-like mechanism
Researchers have helped unravel the mystery of why certain pairs of stars pulse with regular, long-period bursts of radio waves. The particular class of objects observed comes in pairs that always include a compact dead star, ...
Medical Xpress / Electric fields offer new hope against aggressive brain cancer
More than a decade ago, Dr. Matthew Hebb was treating patients with Parkinson's disease using deep brain stimulation by implanting tiny electrodes into the brain and delivering electrical signals to control tremors. He wondered ...
Phys.org / Tracer exchange reveals ions can speed up or slow down inside battery solids
Understanding how ions diffuse in solid materials is essential for technologies including batteries, electronics and chemical catalysts, but it has been hard for a simple reason: the materials are solids.
Phys.org / Theoretical framework expands directional light control beyond ordered crystal structures
A research team has developed a new theoretical framework that can suppress light scattering in certain directions while enhancing it in others, even in irregularly arranged materials. The work extends research on controlling ...
