12.1
Science & Technology
Engineers solve the paradox of why tissue gets stiffer when compressed
Engineers solve the paradox of why tissue gets stiffer when compressed
Tissue gets stiffer when it’s compressed. That stiffening response is a long-standing biomedical paradox, as common sense dictates that when you push the ends of a string together, it loosens tension, rather than increasing it. New research explains the mechanical interplay between that fiber network and the cells it contains.
Summer aerospace research at the Jet Propulsion Lab
Summer aerospace research at the Jet Propulsion Lab
Senior Alex Ulin from Los Angeles spent the past two summers working at a NASA-contracted field center, and is now aiming for a career leading teams of aerospace scientists and engineers.
Weighing the environmental impacts of a byproduct of biofuel combustion: plant skeletons
Weighing the environmental impacts of a byproduct of biofuel combustion: plant skeletons
The School of Arts and Sciences’ Reto Gieré and Ruggero Vigliaturo and colleagues found that phytoliths—small, silica-containing deposits present in many plant species—are emitted during biofuel combustion.
Physicists look to navigational ‘rhumb lines’ to study polymer’s unique spindle structure
Physicists look to navigational ‘rhumb lines’ to study polymer’s unique spindle structure
Researchers show how polymer spheres contract to form unique spiral structures known as loxodromes, or rhumb lines, creating patterns that are ten times smaller than the width of a human hair.
Genes play a role in dog breed differences in behavior
Genes play a role in dog breed differences in behavior
Border collies are highly trainable, greyhounds love to chase, and German shepherds make good guard dogs. While the environment plays a role, traits like these are highly heritable. A new study identifies 131 genetic variants associated with breed differences in behavior.
From the classroom to the lab and back again
From the classroom to the lab and back again
Senior Adithya Sriram is busy earning two degrees, researching new applications for graphene, and preparing physics courses for students in West Philadelphia.
Identifying a gene for canine night blindness
Identifying a gene for canine night blindness
An international team of researchers led by the School of Veterinary Medicine’s Keiko Miyadera has identified the gene mutation responsible for a form of night blindness in dogs. Strategies to treat this condition could also inform treatment of other diseases that rely on targeting this cell type.
New chip poised to enable handheld microwave imaging
New chip poised to enable handheld microwave imaging
Penn researchers show that the new microwave imager chip could form images of simple objects. Unlike light, microwaves can travel through certain opaque objects, making microwave imagers potentially useful in a wide variety of applications.
New topological insulator can reroute photonic ‘traffic’ on the fly
New topological insulator can reroute photonic ‘traffic’ on the fly
Penn researchers, who first discovered topological insulators in 2005, have shown, for the first time, a way for a topological insulator to make use of its entire footprint without wasted space throughout the material’s interior.
Exploring cryptocurrency and blockchain in Iceland
Exploring cryptocurrency and blockchain in Iceland
A virtual reality film, photo series, and soundscape from Penn and Rutgers document the effect this fast-growing tech industry is having on the country’s natural resources and people.
In the News
The New York Times
How Narwhal the ‘unicorn’ puppy may have grown a tail on his head
Margret Casal of the School of Veterinary Medicine explained that the puppy with a tail on its face that went viral is likely the result of another embryo that didn’t fully separate in utero.
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Forbes
The real story about organoids: What you should know about ‘brains in a dish’
Hongjun Song of the Perelman School of Medicine explained how brain organoids were developed. “In the last five years scientists figured out how to turn stem cells into 3D cell structures, and eventually [developed] so-called brain organoids, which look like not only cell types in the brain but also cell architectures,” he said.
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The New York Times
You got a brain scan at the hospital. Someday a computer may use it to identify you
Aaron Roth of the School of Engineering and Applied Science commented on research that paired MRI scans with facial recognition software. “It is clear that eventually this will be a worrying attack” on stored medical data, he said.
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Inside Higher Ed
Twitter’s gender imbalance
Rachel Werner of the Perelman School of Medicine authored a study that found that while men and women use Twitter at equal rates, the site has not reduced gender disparities in academia overall.
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PBS
Study finds kittens bond with their human caregivers like babies do
Carlo Siracusa of the School of Veterinary Medicine advised readers to keep in mind that while babies and kittens are similar, they’re not analogous; scientific findings about one may not hold true for the other. “We should be open-minded about the idea that there are other variables [at play],” he said.
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Smithsonian Magazine
Women scientists were written out of history. It’s Margaret Rossiter’s lifelong mission to fix that
M. Susan Lindee of the School of Arts and Sciences praised academic Margaret Rossiter’s research on women’s contributions to science. “We have to look at her past work carefully,” said Lindee, “and re-examine all those brilliant strategies that women used to contest institutional power, which was oriented around preventing them from succeeding.”
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The Hill
R&D, not Greenland, can solve our rare earth problem
Research into rare earth metals by Eric Schelter, Patrick Carroll, Ph.D. student Justin Bogart, and alumnus Connor Lippincott of the School of Arts and Sciences was cited.
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Earth Magazine
Researchers find no link between testosterone and a lack of cognitive empathy
New research by Gideon Nave of the Wharton School found that, contrary to past research, increased testosterone levels do not impair men’s ability to empathize. “We found that there is no evidence to support this effect of testosterone, but that doesn’t rule out any possible effects,” said Nave. “From what we know, though, it seems that if testosterone does have an influence, the effect is complex, not linear.”
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Philadelphia Inquirer
Breeding has shaped dogs’ brains, MRI scans reveal
Wilfried Mai of the School of Veterinary Medicine weighed in on a study that analyzed cognitive differences between dog breeds. “The paper demonstrates very nicely differences in brain morphology with either reduction or hypertrophy [larger size] of certain brain areas that are known to be associated with specific behaviors,” he said.
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WESA Radio (Pittsburgh)
Wheels, drones and Rescue Randy: DARPA robotics competition puts mine rescue to the test
A four-legged robot from the School of Engineering and Applied Science was among robots performing underwater search and rescue in a competition. “They're doing everything completely autonomously, so every step they take is kind of a minor victory for us,” said C. J. Taylor. “We always feel that we could do better. We learn so much from each of these events and that gives us new ideas about things that we want to try.”
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