lundi 18 mars 2024

 Dear olivier hartmanshenn,

Here is your customized Science X Newsletter for week 11:

Newly discovered fossil of giant turtle is named after Stephen King novel character

An international research team led by Dr. Gabriel S. Ferreira from the Senckenberg Center for Human Evolution and Paleoenvironment at the University of Tübingen has described a new species of giant turtle from the late Pleistocene.

New research suggests that our universe has no dark matter

The current theoretical model for the composition of the universe is that it's made of normal matter, dark energy and dark matter. A new University of Ottawa study challenges this.

Photon-like electrons in a four-dimensional world discovered in a real material

Dirac electrons were predicted by P. Dirac and discovered by A. Geim, both of whom were awarded the Nobel Prize in Physics in 1933 and in 2010, respectively. Dirac electrons behave like photons rather than electrons, for they are considered to have no mass, and in materials they move with light velocity.

The numbers do not add up for mathematics homework, according to a new study

Supporting kids with math homework is a common afterschool activity. But beyond the basics, new curricula and teaching strategies are making it harder for parents to help and it's taking a serious toll on children's confidence and learning.

Quantum dance to the beat of a drum: Researchers observe how energy of single electron is tuned by surrounding atoms

Physicists at the University of Regensburg have choreographed the shift of a quantized electronic energy level with atomic oscillations faster than a trillionth of a second.

Snakes: The new, high-protein superfood

Farmed pythons may offer a sustainable and efficient new form of livestock to boost food security, according to new research from Macquarie University.

Researchers prove fundamental limits of electromagnetic energy absorption

Electrical engineers at Duke University have determined the theoretical fundamental limit for how much electromagnetic energy a transparent material with a given thickness can absorb. The finding will help engineers optimize devices designed to block certain frequencies of radiation while allowing others to pass through, for applications such as stealth or wireless communications.

Giant sequoias are a rapidly growing feature of the UK landscape

Imported giant sequoia trees are well adapted to the UK, growing at rates close to their native ranges and capturing large amounts of carbon during their long lives, finds a new study led by UCL researchers with colleagues at the Royal Botanic Gardens, Kew.

Cicadas' unique urination unlocks new understanding of fluid dynamics

Cicadas are the soundtrack of summer, but their pee is more special than their music. Rather than sprinkling droplets, they emit jets of urine from their small frames. For years, Georgia Tech researchers have wanted to understand the cicada's unique urination.

Quantum-mechanical 'molecules' spotted in superconducting devices

Electronic states that resemble molecules and are promising for use in future quantum computers have been created in superconducting circuits by physicists at RIKEN.

Scientists can now remove nanoplastics from our water with 94% efficiency

University of Waterloo researchers have created a new technology that can remove harmful nanoplastics from contaminated water with 94% efficiency. The study, "Utilization of epoxy thermoset waste to produce activated carbon for the remediation of nano-plastic contaminated wastewater," was published in the journal Separation and Purification Technology.

Large-scale study explores genetic link between colorectal cancer and meat intake

In one of the largest ever gene-environment interaction studies of red meat and colorectal cancer, which explored the impact of red meat consumption on a person's cancer risk based on their genotype, researchers have identified two genetic markers that may help explain the association between the two and explain why some people face a higher cancer risk.

Scientists reveal the first unconventional superconductor that can be found in mineral form in nature

Scientists from Ames National Laboratory have identified the first unconventional superconductor with a chemical composition also found in nature. Miassite is one of only four minerals found in nature that act as a superconductor when grown in the lab. The team's investigation of miassite revealed that it is an unconventional superconductor with properties similar to high-temperature superconductors.

Giant volcano discovered on Mars

In a groundbreaking announcement at the 55th Lunar and Planetary Science Conference held in The Woodlands, Texas, scientists revealed the discovery of a giant volcano and possible sheet of buried glacier ice in the eastern part of Mars' Tharsis volcanic province near the planet's equator.

Migration of hominins out of Africa may have been driven by the first major glaciation of the Pleistocene

A pair of planetary scientists, one with the University of Milan, the other with Columbia University, has found evidence that the exodus of hominins out of Africa approximately 1 million years ago may have been driven by the first major glaciation of the Pleistocene.

More precise understanding of dark energy achieved using AI

A UCL-led research team has used artificial intelligence (AI) techniques to infer the influence and properties of dark energy more precisely from a map of dark and visible matter in the universe covering the last 7 billion years.

Our bacteria are more personal than we thought, new study shows

The trillions of bacteria that call your body home—collectively known as the microbiome—appear to be unique to you, like a fingerprint. That's one conclusion of a detailed study of the gut, mouth, nose and skin microbiomes of 86 people. Over the course of six years, the bacteria that persisted best in each person's microbiome were those that were most particular to the individual, rather than those shared by the entire population.

How do neural networks learn? A mathematical formula explains how they detect relevant patterns

Neural networks have been powering breakthroughs in artificial intelligence, including the large language models that are now being used in a wide range of applications, from finance, to human resources to health care. But these networks remain a black box whose inner workings engineers and scientists struggle to understand.

Condor telescope reveals a new world for astrophysicists

A new telescope called the "Condor Array Telescope" may open up a new world of the very-low-brightness universe for astrophysicists. Four new papers, published back to back in the Monthly Notices of the Royal Astronomical Society (MNRAS) this month, present the first scientific findings based on observations acquired by Condor. The project is a collaborative led by scientists in the Department of Physics and Astronomy at Stony Brook University and the American Museum of Natural History (AMNH).

Mars attracts: How Earth's interactions with the red planet drive deep-sea circulation

Scientists from the Universities of Sydne

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