Phys.org news
Phys.org / Phosphorus spikes linked to ancient marine mass extinctions
Researchers have uncovered new evidence that short-lived spikes in ocean phosphorus may have played a major role in two of the most severe marine extinctions in Earth's history. Dr. Matthew Dodd from The University of Western ...
Phys.org / Ghost bat dialects emerge across colonies, study suggests
Accents are usually thought of as a human trait, indicating where a person has grown up or the communities they belong—and new research shows the same dialects can also occur in Australia's largest carnivorous bat.
Phys.org / Precision work prior to cell division: How enzymes optimize DNA structure
Before a cell can divide, it has to precisely duplicate its entire genetic information. However, the DNA in the cell exists as part of a DNA-protein complex known as chromatin. For this purpose, the DNA is wrapped around ...
Phys.org / Atomic-level simulations reveal rotational mechanism behind a critical biomolecular motor
The way a key cellular motor works at an atomic level has been uncovered by simulations conducted by RIKEN biophysicists. This finding, published in the journal Proceedings of the National Academy of Sciences, provides important ...
Phys.org / One of cholera's great enemies is found in the human gut
Cholera-causing bacteria are locked in an evolutionary arms race with a viral nemesis, according to a new genomic study. Researchers have found that, in the Ganges Delta, cholera bacteria rapidly gain and lose special armor ...
Phys.org / Analysis tracks 20 years of coastal species shifts in the Gulf of Maine
Researchers from the University of Maine, in partnership with the Maine Department of Marine Resources (DMR), are analyzing more than 20 years of fishery survey data from the Gulf of Maine to examine how environmental change ...
Phys.org / Soil biodiversity linked to lower human infectious disease risk
Diverse soil microbial communities may help suppress pathogens naturally, acting as a biological barrier against their establishment and spread, according to a new study. Professor Brajesh Singh, from The University of Western ...
Phys.org / How plants fight back against bacteria that promote waterlogging in leaves
Farmers, gardeners, and botanists have long observed that plant diseases tend to flare up during periods of high humidity, particularly after rainfall. Humid conditions help bacteria enter plant leaves, and once inside, certain ...
Phys.org / Are relationship surveys measuring the wrong thing? How one 'Q-factor' shapes most answers
Commonly used self-report measures of romantic relationships may capture people's overall appraisal of their relationship more than measuring distinct relationship facets such as communication, conflict and affection, according ...
Phys.org / Air surveillance reveals hidden reservoirs of antibiotic resistance genes
A review finds that antibiotic resistance genes—capable of undermining modern medicine—can travel through the air across both cities and farmland, and argues that airborne spread represents an overlooked public health risk.
Phys.org / 'Canary in the coal mine': Superb fairy-wrens in Canberra could go extinct within 30 years
Superb fairy-wrens are facing "imminent danger," and a well-studied population in Canberra could go extinct in the next 30 years if we don't urgently curb greenhouse gas emissions, according to an international team of scientists ...
Phys.org / Millions-of-years-old insect symbioses are surprisingly fragile
Many insects have lived in close symbiosis with bacteria for millions of years, during which time the bacteria have provided them with vital nutrients, making the mutualistic relationship so close that neither partner can ...