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Stanford Study Reveals Immune Cells Invade the Aging Brain Earlier Than Expected

A long-held assumption about the brain's relationship with the immune system has been challenged by new research from Stanford University. Scientists have found that the aging human brain may be far less isolated from the rest of the body than previously believed. The study discovered that significant numbers

Researchers Demonstrate First Superconducting Quantum Heat Engine Operating Near Absolute Zero

Researchers have successfully demonstrated the world's first cyclic superconducting quantum heat engine capable of converting heat close to absolute zero into usable mechanical energy. The device, developed using superconducting circuits, represents a significant milestone in quantum thermodynamics and could eventually enable quantum computers to operate more efficiently. The

Stress Hormone Reveals Unexpected Role in Brain Repair and Myelin Development

Researchers have uncovered an unexpected mechanism by which the brain may repair itself after injury. A team found that myelin-producing precursor cells rapidly release the stress hormone corticotropin-releasing hormone (CRH) near damaged brain tissue, where it helps control how these cells mature and rebuild protective nerve insulation. Myelin is the

Estrogen-Only Hormone Therapy Linked to Reduced Alzheimer's Signs in Women's Brains

A large-scale study examining more than 21,000 participants has found that women who used estrogen-only hormone therapy later in life were less likely to develop dementia and exhibited fewer hallmarks of Alzheimer's disease in their brains. The research revealed that hormone therapy use was associated with 39%

Original Collagen Discovered in 66-Million-Year-Old Dinosaur Bones Challenges Fossilization Assumptions

A team of researchers has uncovered compelling evidence that original collagen—the primary protein in bone and connective tissue—can persist inside dinosaur fossils for tens of millions of years. This finding upends a long-standing assumption in paleontology that such organic molecules would degrade completely over geological timescales. The discovery,

Study Reveals Atlantic Ocean's Warming Threshold Depends on Speed of Change

The Atlantic Ocean has more capacity to absorb warming than previously thought—but only if that warming occurs gradually, according to new research. Scientists studying the Atlantic Meridional Overturning Circulation (AMOC) have discovered that the ocean system responds differently depending on the speed of temperature change. When warming happens slowly,

SDSS-V Expands Cosmic Census to Southern Sky with 3 Million New Stellar Spectra

The Sloan Digital Sky Survey's fifth iteration (SDSS-V) has completed a major expansion, bringing its optical spectroscopic coverage to the entire sky for the first time by extending into the Southern Hemisphere. This release adds more than three million new spectra to the survey's database, dramatically