From suicide bombers to positions of authority—the changing role of women in jihadi groups
Khadra Essa, a Somali-born Dutch citizen operating in Syria under the name Umm Qaqa al-Somali, is a wanted woman.
2 days ago Phys.org
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In Alaska, soil in permafrost regions is warming the fastest
Soils are warming quickly and at considerable depth across Alaska, with temperatures rising fastest in the state's permafrost region, a trend that could accelerate climate change and undermine the stability of roads,…
2 days ago Phys.org
Teen sexting: Why 'just say no' fails
Blunt warnings telling teenagers not to share sexual images are failing to protect them and can make victims of image-based sexual abuse feel blamed, ashamed and unable to seek help, according to new research from the…
2 days ago Phys.org
Largest-ever jaguar analysis identifies how populations are connected across the Americas
An international team of researchers has produced the most comprehensive assessment to date of connectivity across the jaguar's range, identifying key habitats and movement corridors that could help guide conservation…
2 days ago Phys.org
Celebrity accounts reveal distinctive victim-blaming in deepfake sexual abuse
Celebrity victim-survivors of deepfake sexual abuse face distinctive forms of victim-blaming, harassment and barriers to justice, according to new research led by Irish researchers.
2 days ago Phys.org
Urban environments may be the ultimate training grounds for invasive species
As cities grow and urban sprawl expands, could these changing landscapes be giving invasive species a competitive edge? Scientists at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) say…
2 days ago Phys.org
Hazelwood redevelopment suggests neighborhood investment can advance without typical displacement pressures
Neighborhood investments meant to improve housing and opportunity often spark fears of gentrification and displacement. That worry is playing out in Pittsburgh's Hazelwood neighborhood, where a stalled Second Avenue…
2 days ago Phys.org
Sex-like DNA exchange in starving bacteria occurs over 100 times more often than spontaneous mutations
How do bacteria adapt when resources run low? ISTA researchers have found that, under starvation stress, E. coli can use bacteriophages and CRISPR-Cas immunity to transfer and incorporate DNA, accelerating genetic…
2 days ago Phys.org
Does a deeper voice make men more attractive? These researchers have the answer
During puberty, as boys transition into men, the dramatic drop in their vocal pitch has sparked a long-running debate among scientists. Why did such deep voices evolve in the first place? Was it to attract female mates…
2 days ago Phys.org
Global health research delivers medical advances and economic benefits far beyond its target countries
Recently, a middle-aged woman came to see me in my ophthalmology clinic because her eyes felt gritty and uncomfortable. She had seen another doctor a month earlier who diagnosed her with eyelid inflammation and wrote…
2 days ago Phys.org
Ready at 12? Why age alone cannot tell you when children can go out unsupervised
By the time children are around 12 years old, many will begin to ask if they can go out to the local park, playground or stores to spend time with their friends without adult supervision.
2 days ago Phys.org
Stable salts unlock alternative to potentially explosive reagents in carbene chemistry
Many useful reactions in chemistry come with a trade-off: the reactive reagents that make them effective can also present practical and safety challenges. Carbene chemistry is one such example. For decades, chemists…
2 days ago Phys.org
Study finds city-level fire data can hide what's happening block by block
A decade of New York City fire data shows that citywide trends can mask sharply different realities on the ground, with some neighborhoods moving in the opposite direction of the city as a whole.
2 days ago Phys.org
Chimps plunder less pineapple from friends—and expect them to do the same
In recent years, scientists have shown that chimpanzees favor certain peers by picking whom they prefer to groom and selectively sharing food. The behavior offers a glimpse into humanity's prosocial evolutionary past.…
2 days ago Phys.org
Catalog of mitochondria across life's family tree unearths unusual functions
A research consortium has generated the broadest look yet at the proteins that make up mitochondria, capturing the organelle's diversity across multiple branches on the tree of complex life. With major contributions…
2 days ago Phys.org
Eye-eating amoeba resists treatment—understanding its biochemistry could help
In water, soil and air all around us lives a free-living, single-celled organism called Acanthamoeba. Most of the time, Acanthamoeba keeps to itself. On rare occasions, though, the amoeba infects humans and can cause…
2 days ago Phys.org
How going digital offers families more than annual adoption letters
Digital technology could transform the way adopted children stay connected with their birth families, according to new research from the University of East Anglia. A study published in the journal Adoption & Fostering…
2 days ago Phys.org
What is helping some Florida wildfires burn hotter, spread faster?
What is helping some Florida wildfires burn hotter and spread farther? A University of Florida study suggests cogongrass, an invasive grass that has spread across much of Florida and the southeastern United States, is…
2 days ago Phys.org
Following ancient rain toward life-related chemistry clues on Mars
The Mars we know today is a cold, dry world of dust and rocks. However, around 3.8–3.6 billion years ago, it may have looked very different. Geological and mineral evidence suggests that, in its distant past, the planet…
2 days ago Phys.org
A cleaner X-ray view of our galactic center's hot mess
The center of the Milky Way galaxy is a chaotic place. In addition to the 4-million-solar-mass black hole known as Sagittarius A* (Sgr A*), the region is full of gas, dust, strong magnetic fields and stars in various…
2 days ago Phys.org