Phys.org news

Phys.org / Earth's oxygen-rich atmosphere may owe its existence to cold subduction

Earth was mostly devoid of oxygen for much of its 4.5 billion year lifetime. That is, until certain processes started to allow for the eventual buildup of oxygen up to the levels we have now (around 21% of the atmosphere). ...

2 hours ago
Phys.org / An invisible battle between bacteria determines the flavor and safety of salami

Fermentation is one of the oldest methods of preserving food. Long before refrigerators existed, people relied on microorganisms to keep food—including meat—safe to eat. Ph.D. research by VUB researcher Ana Sosa Fajardo (VUB ...

2 hours ago
Phys.org / Memory-preserving transistors could bypass the Boltzmann limit

Researchers have created a new theoretical framework that shows how memory-preserving "memtransistors" could overcome the intrinsic limits in efficiency faced by conventional semiconductor transistors, imposed by the laws ...

8 hours ago
Phys.org / Dying cells don't all release key inflammatory cytokine in the same way, research reveals

Researchers at Toho University have uncovered a previously unrecognized mechanism controlling how dying cells release the inflammatory cytokine IL-33, a key driver of allergy, asthma, tissue inflammation, and cancer progression. ...

2 hours ago
Phys.org / The strange quantum property of tomorrow's insulator

Ultra-fast data transfer and superconductivity: Quantum materials offer significant technological prospects—if we can understand them at the atomic scale. A team from the University of Geneva (UNIGE), in collaboration with ...

2 hours ago
Phys.org / Women's faces outrank men's in attractiveness across cultures, global study shows

Why are women considered the "fairer sex" in humans, when in most animal species it is males that display the more elaborate and visually striking traits? This question has intrigued researchers since Darwin. A new large-scale ...

3 hours ago
Phys.org / Quantum teleportation carries microwave states at temperatures up to 4 K, beating classical limit

A growing number of quantum engineers worldwide have been trying to realize large-scale quantum networks, which consist of several connected quantum computers or devices that share information with each other. The successful ...

5 hours ago
Phys.org / As snow droughts continue to threaten global food security, research calls for climate-resilient agriculture practices

Global climate change is reshaping agricultural ecosystems. As warmer winters become more prevalent, snow droughts caused by insufficient snowfall are becoming more frequent. This leaves winter wheat, which relies on snow ...

3 hours ago
Phys.org / Fake predator eyes scare off seabirds until they learn they're not real

In Danish fisheries, fish-eating seabirds are a menace. They often swoop down and feed on fish trapped in nets, which can hit profits and also sometimes lead to the accidental death of the birds. So scientists deployed an ...

5 hours ago
Phys.org / Coral study could help explain infertility and ovarian cancer by decoding cilia-driven fluid flows

A study by researchers at The University of Manchester, carried out alongside the Universities of Melbourne and Copenhagen, could hold the key to understanding the causes of long-term health problems, such as infertility ...

3 hours ago
Phys.org / Reconstructed 1.5‑billion‑year‑old protein network reveals hundreds of hidden disease‑linked genes

A University of Texas at Austin-led team has reconstructed the most detailed map to date of the molecular machines that carried out the functions of life in an ancient ancestor that gave rise to all complex life on Earth, ...

4 hours ago
Phys.org / Fish have no necks, yet this ancient balancing trick keeps their heads startlingly steady in motion

Postural control is a fundamental behavior for most animals, and head stability in particular plays a crucial role in achieving stable sensory input, accurate spatial perception, and efficient motor output. Tetrapods, including ...

4 hours ago