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Dialog / Natural selection can work at many levels, from molecules to ecosystems
When most people think about natural selection, they imagine individuals competing with one another: The fastest animal escapes predators, the strongest plant produces more seeds, and the most resistant bacteria better survive ...
Phys.org / Impact-formed glass provides evidence of cosmic collision in Brazil about 6 million years ago
For the first time in Brazil, researchers have identified a field of tektites. These are natural glasses formed by the high-energy impact of extraterrestrial bodies against Earth's surface. These structures, named geraisites ...
Medical Xpress / Kirigami-inspired sensors precisely map activity of neurons in the primate brain
Recent technological advances have opened new exciting possibilities for the development of smart prosthetics, such as artificial limbs, joints or organs that can replace injured, damaged or amputated body parts. These same ...
Phys.org / Bacterial strain from 5,000-year-old cave ice shows resistance against 10 modern antibiotics
Bacteria have evolved to adapt to all of Earth's most extreme conditions, from scorching heat to temperatures well below zero. Ice caves are just one of the environments hosting a variety of microorganisms that represent ...
Phys.org / Nanoengineers realize an on-chip excitonic hyperlens
When light passes through materials, it typically changes direction and bends in predictable ways. This change in direction, known as refraction, is caused by a change in the speed of light as it enters a new medium. In some ...
Phys.org / Phonon lasers unlock ultrabroadband acoustic frequency combs
Acoustic frequency combs organize sound or mechanical vibrations into a series of evenly spaced frequencies, much like the teeth on a comb. They are the acoustic counterparts of optical frequency combs, which consist of equally ...
Medical Xpress / Newly found immune cells link strep throat to psoriasis
A common strep throat infection can trigger guttate psoriasis by altering the behavior of key immune cells, according to a new study from Karolinska Institutet published in eBioMedicine. The findings suggest how an infection ...
Phys.org / Quantum trembling: Why there are no truly flat molecules
Traditional chemistry textbooks present a tidy picture: Atoms in molecules occupy fixed positions, connected by rigid rods. A molecule such as formic acid (methanoic acid, HCOOH) is imagined as two-dimensional—flat as a ...
Medical Xpress / MRI antenna can boost image quality and shorten scan times—without changing existing machines
Magnetic resonance imaging (MRI) is one of medicine's most powerful diagnostic tools. But certain tissues deep inside the body—including brain regions and delicate structures of the eye and orbit that are of particular ...
Medical Xpress / Why chronic pain lasts longer in women: Immune cells offer clues
Chronic pain lasts longer for women than men, and new research suggests differences in hormone-regulated immune cells, called monocytes, may help explain why.
Phys.org / Endangered Kenyan antelopes rescued after being stranded at Palm Beach airport
When Paul Reillo learned the endangered mountain bongo antelopes that he had cared for since birth were stranded in a cargo plane on an airport tarmac ahead of their journey to a new home in Kenya, he took matters into his ...
Medical Xpress / Smart T-shirt could reveal heart conditions in danger of being missed
A smart T-shirt with the power of AI could in the future detect heart conditions as people go about their daily lives, thanks to research at Imperial College London. Currently, people with symptoms like chest pains and dizziness ...