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Medical Xpress / A global fertility reversal is unfolding, and it could upend who becomes parent in decades ahead
With few exceptions, birth rates are falling worldwide. What does this mean? Put simply, the fertility rate describes the average number of children a woman is expected to have over the course of her life, if exposed to the ...
Phys.org / Riding the quantum wave: Quasiparticles reveal a magneto-optical transport phenomenon
Excitons are being explored in materials science and information technology as a means of storing light. These luminous quasiparticles move through individual layers of quantum materials and can absorb and emit light with ...
Phys.org / Common soil fungus could cut pesticide use while helping tomatoes grow stronger
Trichoderma species—a common fungus found in soils—have varying abilities to promote tomato plant growth and differentially affect the abundance of certain soil bacteria, according to a study led by researchers at Penn State.
Phys.org / Climate and competition alone cannot explain Neanderthal extinction, study finds
A new modeling study suggests that greater connectivity between groups may have given Homo sapiens the edge over Neanderthals. Why Neanderthals went extinct and Homo sapiens established a lasting presence in Europe is still ...
Phys.org / Tiny songbird crosses Sahara by flying night after night
Every year a small songbird, no heavier than a letter, crosses the Sahara Desert, the Mediterranean and the Arabian Desert on its migration. New research from Lund University in Sweden now reveals how the tiny bird manages ...
Medical Xpress / Dopamine deficiency found to drive memory impairment in Alzheimer's disease
Why do memories fade in Alzheimer's disease—and can they be restored? University of California, Irvine researchers have uncovered a key mechanism underlying memory loss, showing for the first time that dopamine dysfunction ...
Medical Xpress / Tiny fiber probe monitors three key biomarkers at once, offering faster patient insight
A new fiber probe developed by researchers at The University of Texas at Austin delivers two major innovations in health monitoring to help both patients around the world and the clinicians who care for them. The probe can ...
Medical Xpress / Human cell model recreates Alzheimer's-linked tau pathology and synapse loss
Researchers at LMU have developed a human cell model that replicates key mechanisms of neurodegenerative diseases—with potential for novel therapies. The paper is published in the journal Science Translational Medicine.
Phys.org / Why more gut and soil microbes could make ecosystems easier to predict
Much of the beauty—and challenge—of biology lies in its complexity. That's especially true in the microbial world, where hundreds or thousands of different bacterial species may co-exist in a patch of soil or in a section ...
Phys.org / From the Pampas to Patagonia, DNA reveals South America's human history
A new genetic study shows that cultural diversity in the so-called Southern Cone—the roughly triangular southernmost part of South America—was strongly influenced by extensive human migration. An international research team ...
Medical Xpress / Genetic test forecasts chemo response in breast cancer
A new study from Karolinska Institutet shows that gene analysis of breast cancer tumors can identify patients who do not benefit from chemotherapy given before surgery. The findings, published in the journal Nature Communications, ...
Medical Xpress / Faulty tRNA 'translators' accumulate with age and may scramble protein building
Cells manufacture proteins by following instructions encoded in messenger RNA, which is read in three-letter groups called codons. To translate this message, the cell uses molecules called transfer RNAs (tRNA). These act ...
