Scientific Discoveries

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How a harmful bacterium senses iron—and why it matters for fighting infections
Science News

How a harmful bacterium senses iron—and why it matters for fighting infections

Pseudomonas aeruginosa is a common culprit in hospital-acquired bacterial infections and is growing more resistant to antibiotics. New findings from Aaron Smith, professor of chemistry and biochemistry at UMBC, and collaborators at Oklahoma State University show how a two-protein system inside the bacterium operates like a sensitive switch: The pair detects iron both outside and inside the cell and then rewrites large parts of the microbe's metabolism in response.

📅 2026-10-07 23:20:06    •    Phys.org
International experience gives business leaders an edge, study finds
Science News

International experience gives business leaders an edge, study finds

Business leaders with international experience play a significant role in shaping the success of their organizations and are often associated with stronger organizational performance, including higher growth, profitability and stock market performance, according to a new study published in the Journal of Management.

📅 2026-10-07 23:00:05    •    Phys.org
Superbug P. aeruginosa uses two protein plugs to seal channels against antibiotics
Science News

Superbug P. aeruginosa uses two protein plugs to seal channels against antibiotics

A joint research team has identified a new mechanism underlying antibiotic resistance in Pseudomonas aeruginosa, a major multidrug-resistant "superbug." The discovery provides important clues for the development of new treatments for multidrug-resistant bacterial infections. The findings are published in the journal Nature Communications.

📅 2026-10-07 23:00:01    •    Phys.org
Chain reaction that begins when tumor suppression gene is switched off offers clues to how cancer develops
Science News

Chain reaction that begins when tumor suppression gene is switched off offers clues to how cancer develops

A tumor suppressor gene known as p53 is mutated in more than half of all cancers, but how it acts to prevent cancer formation is largely unknown. A study by UT Southwestern Medical Center researchers sheds light on this phenomenon by showing what happens when p53 becomes disabled, revealing the gene's diverse roles in maintaining healthy metabolic activity, repressing mobile genes called retrotransposons and preventing cells from adopting features of sperm and eggs.

📅 2026-10-07 22:40:04    •    Phys.org
Nobel physics winner's pride at pioneering AI role
Science News

Nobel physics winner's pride at pioneering AI role

Francis Halzen, winner of the Nobel Prize in physics, spoke with pride on Wednesday about his early promotion of artificial intelligence in his research on neutrinos.

📅 2026-10-07 22:40:01    •    Phys.org
Survey finds K-12 educators self-censor to avoid controversy over book selections
Science News

Survey finds K-12 educators self-censor to avoid controversy over book selections

Elementary school teachers often put such care into creating their classroom libraries: shelving multiple copies of each book, stringing lights around them to set the mood, situating beanbag chairs and magic carpet squares strategically to encourage students to settle in.

📅 2026-10-07 22:20:01    •    Phys.org
NYC congestion pricing policy linked to cleaner air in lower Manhattan
Science News

NYC congestion pricing policy linked to cleaner air in lower Manhattan

One year after New York City launched its congestion pricing policy, fine particulate pollution inside Manhattan's congestion relief zone was 13% lower, according to a new analysis that accounted for regional pollution trends, weather and normal year-to-year variability.

📅 2026-10-07 22:00:10    •    Phys.org
First-in-kind data set reveals insights across the world's national and regional economies
Science News

First-in-kind data set reveals insights across the world's national and regional economies

The University of Virginia has published the Global Capitalism Index (GCI), a first-in-kind data set offering unprecedented insights into the globe's capitalism conditions in every country. Assembled from more than two hundred data sets across eight key pillars, the GCI's country-by-country scores offer an array of ways to understand capitalism around the world.

📅 2026-10-07 22:00:06    •    Phys.org
Hawaiian hot spot study uncovers evidence of true polar wander
Science News

Hawaiian hot spot study uncovers evidence of true polar wander

On Earth, everything is moving. The planet spins, the tectonic plates shift and the spin axis wobbles, as do the magnetic poles, which makes determining how things move a rather tricky proposition. For Rice University's Richard Gordon, this problem came up when he was trying to understand the history of the Hawaiian hot spot, the deep-mantle source of the volcanism that created the Hawaiian–Emperor chain of islands and underwater volcanoes.

📅 2026-10-07 21:40:06    •    Phys.org