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Phys.org / Scientists develop a smarter mRNA therapy that knows which cells to target

Researchers at the Icahn School of Medicine at Mount Sinai have developed a first-of-its-kind mRNA system that switches on therapeutic genes preferentially inside targeted cells—an advance demonstrated in studies in mice ...

Dec 15, 2025 in Nanotechnology
Phys.org / Young shark species more vulnerable to extinction, fossil record reveals

Whether a species has just freshly emerged, or it has been around for millions of years does not dictate its vulnerability. This has been the assumption of an old debate on whether species' age plays a role in extinction ...

Dec 17, 2025 in Biology
Phys.org / Detailed cell map unlocks secrets of how reproductive organs form

New research has mapped the cell types that specialize to form reproductive organs in both sexes, identifying key genes and signals that drive this process. The findings offer important insights into conditions affecting ...

Dec 17, 2025 in Biology
Phys.org / Spot the males: New gene-editing method could transform mosquito control

Researchers have developed a new "color-coded" genetic method that makes it easy to distinguish male and female mosquitoes. This innovation can help solve a major bottleneck in mosquito control strategies that rely on releasing ...

Dec 17, 2025 in Biology
Phys.org / A photographer finds thousands of dinosaur footprints near Italian Winter Olympic venue

A wildlife photographer stumbled upon one of the oldest and largest known collections of dinosaur footprints, dating back about 210 million years to the Triassic Period, high in an Italian national park near the 2026 Milan ...

Dec 16, 2025 in Biology
Phys.org / Ancient genetic 'start' signal found in bacteria, archaea and eukaryotes

A newly discovered promoter element "start" points to a shared regulatory syntax for controlling transcription initiation in bacteria, archaea, and eukaryotes.

Dec 15, 2025 in Biology
Phys.org / Enzyme disables bacterial toxin by cleaving key chemical ring structure

A research team at Leibniz-HKI has described a new enzyme that renders the highly toxic molecule malleicyprol harmless. Malleicyprol is considered an important virulence factor of Burkholderia bacteria, which causes, among ...

Dec 17, 2025 in Chemistry
Medical Xpress / 40% of MRI signals do not correspond to actual brain activity, study suggests

For almost three decades, functional magnetic resonance imaging (fMRI) has been one of the main tools in brain research. Yet a new study published in Nature Neuroscience fundamentally challenges the way fMRI data have so ...

Dec 16, 2025 in Neuroscience
Phys.org / From prey to predator: How carnivores spread beneficial fungi

Animals help disperse seeds and spores for many plant and fungal species. This typically happens when animals eat the fruiting bodies of plants and fungi and pass seeds and spores through their digestive systems.

Dec 17, 2025 in Biology
Medical Xpress / 'Zap-and-freeze' snapshots catch brain cells in the act of learning

Researchers at Leipzig University's Carl Ludwig Institute for Physiology, working in collaboration with Johns Hopkins University, have achieved an important breakthrough in brain research. The so-called zap-and-freeze technique, ...

Dec 17, 2025 in Neuroscience
Phys.org / 'Extremely exciting': The ice cores that could help save glaciers

Dressed in an orange puffer jacket, Japanese scientist Yoshinori Iizuka stepped into a storage freezer to retrieve an ice core he hopes will help experts protect the world's disappearing glaciers.

Dec 17, 2025 in Earth
Medical Xpress / Study finds fertility remains high in rural Tanzania despite access to family planning

Fertility rates in much of Sub-Saharan Africa remain high, despite declining child mortality and improved access to contraceptives and female education—factors that generally lead to smaller families and improved economic ...

Dec 19, 2025 in Obstetrics & gynaecology