Science

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Sponges are among earth’s most ancient animals, but exactly when they evolved has long puzzled scientists. Genetic information from living sponges, as well as chemical signals from ancient rocks, suggest sponges evolved at least 650 million years ago. This evidence has proved highly controversial as it predates the fossil record of sponges by a minimum of 100 million years. Now an international team of scientists led by Dr Eleonora Rossi, from the University of Bristol’s School of Biological Sciences, have solved this conflict by examining the evolution of sponge skeletons. The research is published in Science Advances.

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Researchers from the University of Gothenburg have analysed all deleted comments from The Guardian's website between 2006 and 2024, which was 1 million out of a total of 38 million. The results show that hateful comments are posted more quickly than those that are not hateful. This means that the first comments in a thread more often contain hateful language, written in the heat of the moment.

“We conducted a time study of when the comments were written in relation to the publication of the article, or in relation to a comment to which they were a direct response,” says William Hedley Thompson, a researcher at the University of Gothenburg. Bild Portrait image of Ben Clarke Ben Clarke, Senior Lecturer at the Department of Applied Information Technology at the University of Gothenburg. Photo: Gunnar Jönsson

The researchers also found that if a comment contained hateful content, the likelihood of more hateful comments appearing in the same thread increased. The level of discussion is set by the first comment, and then more readers feel compelled to quickly follow suit.

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As the shoe strains to maintain grip, says Djellouli, tiny sections of the rubber sole rapidly change shape, momentarily losing and regaining contact with the floor thousands of times per second. These quick oscillations occur at a frequency that matches the high-pitched squeak heard on the court.

Djellouli's team repeatedly slid a sneaker against a smooth glass plate and recorded the squeaks with a microphone while capturing the motion with a high-speed camera. (Submitted by Adel Djellouli )

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In this study led by Jie V. Zhao, Yitang Sun, Junmeng Zhang, and Kaixiong Ye from the University of Hong Kong and the University of Georgia, researchers investigated whether two amino acids, phenylalanine and tyrosine, affect how long people live (lifespan). The results suggest that higher levels of tyrosine are linked to shorter life expectancy in men, pointing to potential sex-specific approaches to promoting longevity.

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A groundbreaking 2026 study reveals that early humans in Europe used a sophisticated system of geometric signs 40,000 years ago, with complexity matching early writing systems[^1]. Researchers analyzed over 3,000 signs on 260 Aurignacian artifacts from the Swabian Jura region, dated between 43,000-34,000 years ago[^2].

The signs - dots, lines, crosses, and notches - were carved into tools, figurines, and other objects. While not writing in the modern sense, these markings showed deliberate patterns. Figurines carried denser and more complex sequences than tools, and specific symbols were reserved for particular subjects - dots appeared on human and feline figures, while crosses marked animals like mammoths[^3].

The statistical properties of these signs matched the information density of proto-cuneiform tablets from Mesopotamia, which emerged 40,000 years later[^4]. "Sign sequences in protocuneiform script are also repetitive and the individual signs are repeated at a similar rate," said Professor Christian Bentz of Saarland University[^3].

The study suggests these weren't mere decorations but represented an early system for storing and sharing information. The objects were portable, fitting "right in the palm of your hand," according to archaeologist Ewa Dutkiewicz[^4].

[^1]: PubMed - Humans 40,000 y ago developed a system of conventional signs [^2]: Science Daily - 40,000-year-old signs show humans were recording information long before writing [^3]: Sci.News - Early Humans May Have Invented System of Symbols Long Before Writing [^4]: Discover Magazine - 40,000-Year-Old Stone Age Symbols May Be a Precursor to Written Language

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Scientists may have spotted a long-sought triplet superconductor — a material that can transmit both electricity and electron spin with zero resistance. That ability could dramatically stabilize quantum computers while slashing their energy use. Early experiments suggest the alloy NbRe behaves unlike any conventional superconductor. If verified, it could become a cornerstone of next-generation quantum and spintronic technology.

essentially a conductor for "spin currents"

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Launched in 1998, the event has exploded in size as birding has become increasingly popular across the globe and apps make identification and data submission more accessible. Last year, more than 830,000 people participated in the event, digitally capturing around 70 percent of the world’s avian species everywhere from Australia to Canada. This year, the event, which took place from Feb. 14 to 17, had record-breaking levels of participation.

The global datasets generated during the Great Backyard Bird Count and other similar events throughout the year help scientists track how bird populations are changing across time and space, capturing what Cornell Lab’s Mya Thompson calls one of “the heartbeats of the planet.”

But they also show the ways this heartbeat is faltering in the face of climate change and habitat loss. Experts are rushing to figure out how to slow bird losses before they flatline.

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Xi Jinping's regime, which wields the power of life or death over academic careers, has established the number of publications as the primary evaluation criterion, while also limiting the freedom of researchers against a backdrop of corruption, analyzes Isabelle Feng, the vice president of the Asia Centre think tank, for Le Monde.

Archived

Sometimes, silence speaks louder than words. The latest global university ranking, which was conducted by researchers at Leiden University in the Netherlands, has caused a stir in Western media outlets like the New York Times and Le Monde, which noted the meteoric rise of Chinese universities – eight of which made it into the top 10. Normally, such results spark national pride on Chinese social media and give Beijing's mouthpieces an opportunity to sing the praises of the new mantra of the Chinese Communist Party (CPC): "The East is rising, the West is declining."

Paradoxically, the Dutch ranking has become a source of ridicule among Chinese internet users, who were astonished to see that Oxford University had been beaten by Zhengzhou University. The deafening silence of the official media has revealed the regime's embarrassment; the Leiden ranking, which is based on the number of scientific publications, has mainly reminded the Chinese public of the ongoing scandals involving paper mills – operations that produce paid-for scientific articles on demand. On January 23, the National Natural Science Foundation of China published a list of 46 academics sanctioned for "fraudulent behavior in the publication of scientific research." This is just the tip of the iceberg of xueshu fubai ("academic corruption") that has plagued the country's universities for three decades.

However, it would be unfair to blame Chinese researchers and scientists, who are no less competent or brilliant than their foreign peers, for causing such a calamity. Scientific fraud and the pressure to "publish or perish" exist everywhere, but the pressure has reached another level in the People's Republic of China (PRC), where the sole party, which holds absolute sway over academic careers, has made the number of publications the primary evaluation criterion – even for high school teachers. It is hardly surprising that the PRC overtook the US as early as 2017 in the ranking of scientific publications. Despite the regime's constant promise of "zero tolerance" toward xueshu fubai, Beijing has let paper mills prosper. Many CPC officials caught up in anti-corruption campaigns have been found with fake degrees and doctored publications on their résumés.

[...]

Hindawi, a publisher of nearly 400 open-access journals, retracted more than 9,600 articles that year for fraudulent practices, 8,200 of which had Chinese authors. The journal Nature also revealed that more than 17,000 articles by Chinese authors were withdrawn between 2021 and 2023 – a record in the history of scientific publishing.

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Already starting in 2017, the CPC forced prestigious publishers, including Cambridge University Press and Springer Nature, to censor certain "sensitive" articles. The regime's power to intimidate goes hand in hand with the depth of its pockets. For example, Chinese authors paid $650 million [€551 million] in APCs [article processing charges] in 2022 – enough to buy up entire special issues at Hindawi, where 65% of authors lived in the PRC. Ironically, it was by establishing itself in the booming Chinese market that the American publisher Wiley acquired the Egyptian company Hindawi in 2021 for $298 million – only to shut it down two years later.

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Those who are fascinated by China's remarkable technological catch-up lament the lag in Western research that risks falling into the trap set by the party-state. As the ancient Chinese General Sun Tzu [6th century BCE] wrote in The Art of War, the greatest victory is to make your opponent believe they are already defeated. The apparent technological superiority touted by the regime is the result of the collective work of its scientists, but above all, the product of the CPC's absolute power to allocate budgets as it wishes to industries it deems "strategic," with no regard for social protections or the freedoms of its citizens – including its researchers. Perhaps more telling than the Leiden ranking is the academic freedom index [...] which found that China's score under Xi Jinping fell from 0.64 in 2015 to 0.07 in 2025. Out of 179 countries surveyed, the PRC dropped to 172nd place, behind Cuba and Afghanistan.

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Chinese researchers, moreover, have seen the share of American co-authors in their international collaborations plummet from nearly 50% in 2018 to less than 30% in 2023 – a trend that worries Nature, which describes this as "bad news for everyone." Yet, according to a 2023 study led by French economist Philippe Aghion (Nobel Prize laureate of 2025), Chinese research is far more dependent on American collaborations than the reverse (source - open pdf). Time will tell whether, in isolation, the former will remain competitive and innovative. To draw upon the Chinese proverb: Only by riding a donkey can you find a horse.

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An investigation into headphones has found every single pair tested contained substances hazardous to human health, including chemicals that can cause cancer, neurodevelopmental problems and the feminisation of males.

Even products by market-leading brands such as Bose, Panasonic, Samsung and Sennheiser were found to contain harmful chemicals in the formulation of the plastics from which they are made.

Researchers bought 81 pairs of in-ear and over-ear headphones, either on the market in the Czech Republic, Slovakia, Hungary, Slovenia and Austria, or from the online marketplaces Shein and Temu, and took them for laboratory analysis, testing for a range of harmful chemicals.

“Hazardous substances were detected in every product tested,” they said.

Bisphenol A (BPA) appeared in 98% of samples, and its substitute, bisphenol S (BPS), was found in more than three-quarters. Synthetic chemicals used to stiffen plastic, BPA and BPS mimic the action of oestrogen inside organisms, causing a range of adverse effects including the feminisation of males, early onset puberty in girls, and cancer. Previous studies have shown that bisphenols can migrate from synthetic materials into sweat, and that they can be absorbed through the skin.

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