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Tech Xplore / Climate, not concrete mix, may drive steel corrosion in low-carbon structures
It is hard to imagine the modern world without concrete. Enormous quantities are used in construction worldwide, and the production of cement—its main ingredient—generates a great deal of CO₂, a greenhouse gas that accelerates ...
Phys.org / What happens when you flush? Study reveals how toilet aerosols reach the breathing zone
Researchers from Flinders University have found that flushing toilets can release aerosols and bioaerosols into the surrounding air, with some studies detecting particles at heights corresponding to adults' breathing zones.
Phys.org / A fossil feather preserved inside dinosaur poop could help explain why birds survived the mass extinction
About 66 million years ago, a dinosaur—maybe a T. rex or a Nanotyrannus—ate a bird. The record of that meal, in the form of fossilized poop, has survived to today, preserving the best example of a feather ever found from ...
Phys.org / Gondwana really was a supercontinent—and it may have helped kickstart life on Earth
Some 550 million years ago, Earth looked very different than it does today. The Southern Hemisphere was dominated by an enormous single continent known as Gondwana.
Medical Xpress / Newly mapped brain circuit offers clues to how slow nasal breathing eases anxiety
A slow breath in and out does the trick for many people when calming their nerves and dealing with anxiety, a disorder that affects millions of people worldwide. Pranayama, Taoism and meditation have long used slow nasal ...
Phys.org / The surprising place where giant dinosaurs incubated their eggs
Finding a fossilized dinosaur egg is exceptionally rare, but finding a stash of more than 250 shell fragments in the chilly southern reaches of the planet is even more surprising. The discoveries come from southernmost Patagonia ...
Phys.org / An unusual bacterium that penetrates and lives inside human cells may offer a new drug target
Research underway in the lab of Rebecca Alexander, a professor in Wake Forest University's Department of Chemistry, is shedding light on an unusual human bacterium, Mycoplasma penetrans. Alexander's work to understand how ...
Phys.org / A wandering black hole caught feeding on the run
Astronomers have found the first direct evidence that a wandering black hole can feed itself by dragging gas along in its wake as it moves through its galaxy. It's the first direct evidence of an accretion channel long predicted ...
Medical Xpress / Stress hormone timing creates a different kind of obesity, study suggests
Obesity caused by disrupted stress-hormone rhythms is metabolically very different from obesity caused by a high-fat diet, according to a new preclinical study by Weill Cornell Medicine investigators. The researchers found ...
Phys.org / Tightly guided atoms could enable low-power quantum navigation when GPS fails
Within tiny halos of light clinging to a vanishingly thin wisp of optical fiber, scientist Jongmin Lee guides atoms like marbles through a narrow pipe. Rock the fiber and the atoms shift side by side; they just don't fall ...
Phys.org / Water isotopes reveal early drought signals in Central Amazon rainfall
The historic droughts of 2023 and 2024 in the Amazon reduced river flows and altered the region's rainfall composition. Daily monitoring in Manaus, the capital of the Brazilian state of Amazonas, revealed these changes through ...
Phys.org / How sex with multiple mates can help save species from extinction
Allowing females to mate with multiple males, rather than just one, could help make species more resistant to extinction, University of East Anglia research shows. A new study reveals that when females have multiple males ...
