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A plan to revive the mammoth is on track, scientists have said after creating a new species: the woolly mouse.
Scientists at the US biotechnology company Colossal Biosciences plan to “de-extinct” the prehistoric pachyderms by genetically modifying Asian elephants to give them woolly mammoth traits. They hope the first calf will be born by the end of 2028.
A low-dose, single-exposure electron diffraction approach is used to reveal the dislocation character and operative slip systems in beam-sensitive molecular crystals.
Asteroids that orbit close to the Earth inevitably cause us some anxiety due to the even remote possibility of a collision. But their proximity also offers ample opportunities to learn more about the universe. Ryugu, a 900-meter diameter asteroid in the Apollo belt, has recently proven useful in our search for signs of life’s precursors elsewhere in our solar system.
A team of researchers at Kyoto University have found evidence of salt minerals in samples recovered from Ryugu during the initial phase of Japan’s Hayabusa2 mission. The discovery of these deposits, containing sodium carbonate, halite, and sodium sulfates, suggest that liquid saline water once existed within a parent body of Ryugu.
Before examining the samples, the team expected that sample grains returned from the asteroid might contain substances not generally found in meteorites. They anticipated that these could be highly water-soluble materials, which readily react with moisture in Earth’s atmosphere and are difficult to detect unless examined in their pristine state as preserved in the vacuum of space.
Who hasn’t been there? The big meal is over, you’re full, but the craving for sweets remains. Researchers from the Max Planck Institute for Metabolism Research have now discovered that what we call the “dessert stomach” is rooted in the brain. The same nerve cells that make us feel full after a meal are also responsible for our craving for sweets afterwards.
To find the cause of the “dessert stomach,” the researchers investigated the reaction of mice to sugar and found that completely satiated mice still ate desserts. The paper is published in the journal Science.
Investigations of the brain showed that a group of nerve cells, the so-called POMC neurons, are responsible for this. These neurons became active as soon as the mice were given access to sugar, which facilitated their appetite.
A dietitian has issued a warning that many people are lacking a crucial nutrient that can reduce the risks of diabetes, heart disease, and cancer.
Dr. Carrie Ruxton has provided insights on the recommended intake, its health benefits, and how to include it in your diet. The medical specialist and advisor to the General Mills fibe r campaign stated that millions of people were “missing out on a vital nutrient which protects us against killer diseases simply because they don’t understand what it does in the body.” That’s the finding of a report about fiber — often called roughage.
Dr. Ruxton said that “adults should eat 30 grams of fiber a day.” But she added: “In reality, people are missing the target by a huge 10 g/day, placing themselves at greater risk of the world’s biggest killers – type 2 diabetes, cardiovascular disease, and cancer.
Bacteria have started eating our pollution.
A recent study revealed that a bacterial strain, called Labrys portucalensis F11, isolated from contaminated soil, can break down the exceptionally strong carbon-fluorine bonds in forever chemicals (PFAS), including some of the concerning shorter-chain varieties.
PFAS, or per-and polyfluoroalkyl substances, are a group of man-made chemicals widely used since the 1950s in numerous products, from nonstick cookware to firefighting foam.
Their widespread use and resistance to degradation have led to their ubiquitous presence in the environment and even in human blood, earning them the moniker forever chemicals. While most remediation efforts focus on containment, F11 bacteria can dismantle these chemicals. Within 100 days, the study showed F11 metabolized over 90% of perfluorooctane sulfonic acid, a hazardous form of PFAS. It also degraded significant amounts of other PFAS compounds. This research tracked not just the parent PFAS, but also the resulting metabolites, some of which F11 further degraded. This is crucial, as some byproducts are equally or more toxic.
While degradation is currently slow, future research will optimize conditions for faster consumption, even with competing carbon sources.
When molecules collide with surfaces, they exchange energy with the surface atoms. This complex process is influenced by quantum interference, where different pathways overlap, creating patterns where some paths enhance each other while others cancel out. This affects how molecules exchange energy and react with surfaces.
Observing quantum interference in collisions with heavier molecules like methane (CH4) was challenging due to the many possible pathways. Scientists wondered if quantum effects would disappear, making classical physics enough to describe these processes.
This review discusses the development and uses of imatinib mesylate, a protein tyrosine kinase inhibitor useful in the treatment of chronic myelogenous leukemia and gastrointestinal stromal tumors that was recently approved by the Food and Drug Administration. Imatinib targets platelet-derived growth factor receptor, inhibits the fusion product of the Philadelphia chromosome, and targets c-kit, a protein tyrosine kinase. The drug may also be effective in the treatment of other tumors that express platelet-derived growth factor receptor or c-kit.