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ScienceDaily: Top Science News |
| Learning from a 'living fossil' Posted: 30 Aug 2021 11:03 AM PDT As we live and breathe, ancient-looking fish known as bowfin are guarding genetic secrets that that can help unravel humanity's evolutionary history and better understand its health. |
| How a racing heart may alter decision-making brain circuits Posted: 30 Aug 2021 11:02 AM PDT In an effort to understand how the internal state of the body influences the brain's decision-making processes, scientists analyzed the data from a previous study pre-clinical study. They found that two of the brain's decision-making centers contain neurons that may exclusively monitor the body's internal dynamics. Furthermore, a heightened state of arousal appeared to rewire one of the centers by turning some decision-making neurons into internal state monitors. |
| Perceptions of supernatural beings reveal feelings about good and bad in humans Posted: 30 Aug 2021 05:18 AM PDT What transpires in comedies and cartoons when a character has a devil on one shoulder and an angel on the other is not far off from people's perceptions of the real world, finds a new study. |
| The physics behind a tardigrade's lumbering gait Posted: 27 Aug 2021 03:41 PM PDT Animals as small and soft as tardigrades seldom have legs and almost never bother walking. But a new study finds that water bears propel themselves through sediment and soil on eight stubby legs, in a manner resembling that of insects 500,000 times their size. |
| Reducing sugar in packaged foods can prevent disease in millions Posted: 27 Aug 2021 05:24 AM PDT Cutting 20 percent of sugar from packaged foods and 40 percent from beverages could prevent 2.48 million cardiovascular disease events (such as strokes, heart attacks, cardiac arrests), 490,000 cardiovascular deaths, and 750,000 diabetes cases in the U.S. over the lifetime of the adult population, according to a new study. |
| Volcanic eruptions may have spurred first 'whiffs' of oxygen in Earth's atmosphere Posted: 26 Aug 2021 08:17 AM PDT A new analysis of 2.5-billion-year-old rocks from Australia finds that volcanic eruptions may have stimulated population surges of marine microorganisms, creating the first puffs of oxygen into the atmosphere. This would change existing stories of Earth's early atmosphere, which assumed that most changes in the early atmosphere were controlled by geologic or chemical processes. |
| Will it be safe for humans to fly to Mars? Posted: 26 Aug 2021 08:17 AM PDT A human space mission would be viable if it doesn't exceed four years, an international research team concludes in new research. |
| New class of habitable exoplanets represent a big step forward in the search for life Posted: 25 Aug 2021 06:12 PM PDT A new class of exoplanet very different to our own, but which could support life, has been identified by astronomers, which could greatly accelerate the search for life outside our Solar System. |
| Brain refreshing: Why the dreaming phase matters Posted: 25 Aug 2021 08:36 AM PDT Researchers have found that blood flow in the brain capillaries, which is important for oxygen/nutrient delivery and waste removal, was increased during rapid eye movement sleep in mice. Adenosine A2a receptors might be at least partially responsible for this increased blood flow. These findings bring new hope for understanding the function of sleep and developing treatments for neurodegenerative diseases that involve the buildup of waste products in the brain, such as Alzheimer's disease. |
| Geneticists map the rhinoceros family tree Posted: 24 Aug 2021 09:10 AM PDT There's been an age-old question going back to Darwin's time about the relationships among the world's five living rhinoceros species. One reason answers have been hard to come by is that most rhinos went extinct before the Pleistocene. Now, researchers have helped to fill the gaps in the rhino evolutionary family tree by analyzing genomes of all five living species together with the genomes of three ancient and extinct species. |
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