ניווט נגישות
כתבות אחרונות מאתר 'Phys'
Phys

David Kipping has new take on the existence of advanced life in the universe and the numbers are not encouraging‎

Between the mid-1970s and early 1980s, two physicists, Michael Hart and Frank Tipler, published a controversial series of papers arguing that extraterrestrial intelligence didn't exist. As they argued, the likelihood that extraterrestrial civilizations (ETCs) would have had enough time to develop advanced computing, spaceflight and self-replicating machines (Von Neumann probes) means they would have colonized the galaxy, and come to Earth, long ago. Since there was no evidence of this, they reasoned that ETCs must not exist and humanity was alone in the universe.

02:48
תפריט כתבה
Phys

Ocean monitoring is in trouble: It's up to Europe and Asia to avoid losing sight of the world's deep‑sea ecosystems‎

The world relies on a modest number of countries to keep watch over the ocean. That arrangement is starting to fail. Europe and Asia must now decide whether to let the system unravel, or to take it up together.

01:40
תפריט כתבה
Phys

Could leaves help feed humanity after disaster?‎

UC researchers are investigating whether leaf protein and sugar extracted from plant fiber could help sustain people if major global shocks disrupt food production. Te Whare Wānanga o Waitaha | University of Canterbury (UC) Associate Professor David Denkenberger, who has spent more than a decade studying food resilience in extreme scenarios, says the work is part of a broader effort to identify practical ways to prevent mass starvation if global food systems are severely disrupted.

00:04
תפריט כתבה
Phys

Dogs and humans are more alike than we thought, study finds‎

The same biological signals that help predict lifespan in humans also appear in dogs, according to new research from the Dog Aging Project—a finding that could help scientists better understand aging in both species.

00:04
תפריט כתבה
Phys

TRACERS spacecraft maps solar energy's route into Earth using cusp electrons‎

Physicists led by the University of Iowa have documented in the finest detail to date how energy from the sun interacts with Earth's magnetic field, which could yield greater insight into solar effects on Earth that drive space weather.

23:03
תפריט כתבה
Phys

How directing water flows in the landscape could support groundwater and surface water streams‎

Researchers at the Leibniz Centre for Agricultural Landscape Research have investigated how water from streams can be stored in the aquifer during wet periods. Using an area in the lower Spree catchment in Brandenburg as an example, the team used a computer model to show that naturally occurring small basins in the landscape could absorb excess stream water, allowing it to seep slowly into the ground and subsequently stabilize groundwater and connected surface water bodies. In the calculations, the groundwater level rose locally by up to 2 meters (6.6 feet). Water flow in connected streams could be increased by up to 15%. The study was published in the Journal of Hydrology: Regional Studies.

23:03
תפריט כתבה
Phys

Cellulose films match plastic performance while enabling recycling or biodegradation‎

A new cellulose-based material platform developed in Finland responds to tightening regulatory requirements and industry pressure to both replace and reduce plastic in packaging, including emerging thresholds such as limiting plastic content to below 5 wt% in fiber-based materials. The technology enables transparent, high-performance films and coatings that match the functionality of plastics while supporting industrial scalability and enabling simplified recycling or biodegradation across multiple environments.

22:34
תפריט כתבה
Phys

When motion prevents order in active matter systems‎

Pack enough string-like objects together, and they will begin to align with one another. But replace the strings with worms or bacteria living in your gut, and this self-organization becomes much more difficult. A team of University of Amsterdam (UvA) researchers has demonstrated that activity can fundamentally alter one of the most important phase transitions in soft matter physics.

22:07
תפריט כתבה
Phys

Q&A: Tracing the origins of supermassive black holes‎

Sarah Pappert is a Ph.D. candidate in astrophysics at the TUM School of Natural Sciences and conducts research at the Max Planck Institute for Extraterrestrial Physics. She is supervised by Prof. Dr. Reinhard Genzel and Prof. Dr. Frank Eisenhauer, who holds a TUM Distinguished Affiliated Professorship at the TUM School of Natural Sciences. Her research focuses on supermassive black holes and the development of astronomical instruments for the Extremely Large Telescope in Chile. In addition to her research, she is actively involved in science communication and is committed to encouraging girls and young women to pursue studies and careers in STEM.

21:35
תפריט כתבה
Phys

CDC sleuthing helps decipher drug-resistant infection rise‎

Previous research from the Centers for Disease Control and Prevention (CDC) found that a dangerous variety of bacteria that cause drug-resistant infections, called NDM-producing carbapenem-resistant Enterobacterales (NDM-CRE), has become much more common in the United States, increasing by 461% from 2019–2023. Now, in a new study presented at ASM Microbe 2026, researchers set out to better understand what was behind this sudden increase, examining if it was driven by closely related strains or, instead, by many different, unrelated bacteria.

21:13
תפריט כתבה
דיווח על כתבה זו הסתרת כתבות מאתר זה המשך קריאה באתר המקור