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כתבות אחרונות מאתר 'Phys'
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New sensors capture warning signs before fish deaths in Lake Victoria‎

Researchers from King's College London recorded the warning signs of a major low-oxygen event in Lake Victoria just hours before fish deaths were reported by local communities, demonstrating why earlier warning systems are urgently needed.

01:23
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Phys

Dark energy flips its sign, but the Hubble tension refuses to budge‎

For nearly a century, astronomers have known that the universe is expanding. In the late 1990s, two independent teams, the Supernova Cosmology Project, led by Saul Perlmutter, and the High-Z Supernova Search Team, led by Brian Schmidt and Adam Riess, discovered something strange: The expansion is speeding up. The finding earned them the 2011 Nobel Prize in Physics. The leading explanation for this acceleration is "dark energy," a mysterious force usually modeled as a constant called Lambda, pushing space apart. Combined with cold dark matter, this gives us the LCDM model, the standard picture of the cosmos for the past 25 years.

00:43
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Phys

Children back group claims over evidence, but privacy reduces bias, experiments reveal‎

As we move closer to Election Day 2026, voting preferences are moving back into focus—and with them, analyses of what drives partisanship at the polls. However, less frequently asked is when Americans show evidence of partisan behavior: shortly or well after reaching the legal voting age? As teenagers? In elementary school?

23:35
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Phys

Why natural forests survive heat waves better than planted forests‎

When a record-breaking drought and heat wave swept across China's Yangtze River Basin in 2022, forests across the region faced an extreme test. The event provided a rare opportunity for researchers to test how different forests respond when rising temperatures and water shortages strike at the same time.

22:42
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Phys

Moderate warming rewires one-third of microalga's genes, study finds‎

Researchers have demonstrated for the first time that the microalga Chlamydomonas reinhardtii alters the activity of about one-third of its protein-coding genes in response even to moderate temperature changes. The study, published in the journal The Plant Cell, points to far-reaching consequences of climate change for aquatic ecosystems and soil. The research team is from the Cluster of Excellence Balance of the Microverse at Friedrich Schiller University Jena and the Leibniz Institute for Natural Product Research and Infection Biology—Hans Knöll Institute (Leibniz-HKI).

22:06
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Phys

What is 'social media'? Study highlights public confusion about the term‎

Research from Aston University has shown that the public has no clearly accepted definition for the term "social media" or agreement about which websites and platforms are classified as such.

21:45
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Phys

Visible light triggers three-step cascade to make 3D drug-like molecules‎

A team led by chemist Frank Glorius, a professor at the Institute of Organic Chemistry at the University of Münster, has developed a new light-driven reaction sequence. In this triple catalysis, one reaction step triggers the next like three dominoes in a row, toppling one after the other. The molecular transformations occur sequentially in a single reaction vessel. Such one-pot synthesis is considered an ideal process because it is particularly resource- and energy-efficient.

21:45
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Phys

Giant kangaroos survived until 6,500 years ago on the New Guinea coast‎

Roughly 50,000 years ago, a kangaroo unlike any alive today lived in the mountain rainforests of New Guinea.

21:23
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Phys

Dust in the wind: intense storms struck China, US in 2025, says UN‎

China and the southern United States were hit last year by some of their worst sand and dust storms in decades, the United Nations said Friday.

21:23
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Phys

New 3D COF structure could help tune porous materials for batteries and cleanup‎

A research team synthesized and determined the structure of a borate-linked 3D crystalline covalent organic framework, TCTP-COF, via electron diffraction for the first time. These findings will help scientists determine the structure-property relationships for other 3D COFs and facilitate their tuning for advanced applications.

21:06
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