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ScienceDaily: Top News |
| Researchers uncover how the human brain separates, stores, and retrieves memories Posted: 07 Mar 2022 08:31 AM PST Researchers have identified two types of cells in our brains that are involved in organizing discrete memories based on when they occurred. This finding improves our understanding of how the human brain forms memories and could have implications in memory disorders such as Alzheimer's disease. |
| How does the brain make memories? Posted: 07 Mar 2022 08:30 AM PST Researchers have discovered two types of brain cells that play a key role in dividing continuous human experience into distinct segments that can be recalled later. The discovery provides new promise as a path toward development of novel treatments for memory disorders such as dementia and Alzheimer's disease. |
| Cellular rejuvenation therapy safely reverses signs of aging in mice Posted: 07 Mar 2022 08:30 AM PST Age may be just a number, but it's a number that often carries unwanted side effects, from brittle bones and weaker muscles to increased risks of cardiovascular disease and cancer. Now, scientists have shown that they can safely and effectively reverse the aging process in middle-aged and elderly mice by partially resetting their cells to more youthful states. |
| Tiny worms make complex decisions, too Posted: 07 Mar 2022 08:30 AM PST How does an animal make decisions? Scientists have spent decades trying to answer this question by focusing on the cells and connections of the brain that might be involved. Scientists are taking a different approach -- analyzing behavior, not neurons. They were surprised to find that worms can take multiple factors into account and choose between two different actions, despite having only 302 neurons compared to approximately 86 billion in humans. |
| Safer, more powerful batteries for electric cars, power grid Posted: 07 Mar 2022 08:30 AM PST A new study tackled a long-held assumption that adding some liquid electrolyte to improve performance would make solid-state batteries unsafe. Instead, the research team found that in many cases solid-state batteries with a little liquid electrolyte were safer than their lithium-ion counterparts. They also found, if the battery were to short-circuit, releasing all its stored energy, the theoretically super-safe, all-solid-state battery could put out a dangerous amount of heat. |
| New early signs of Parkinson’s uncovered in diverse study Posted: 07 Mar 2022 08:30 AM PST Hearing loss and epilepsy are early features of Parkinson's, according to pioneering new research. |
| Amazon rainforest is losing resilience: New evidence from satellite data analysis Posted: 07 Mar 2022 08:30 AM PST The Amazon rainforest is likely losing resilience, data analysis from high-resolution satellite images suggests. This is due to stress from a combination of logging and burning -- the influence of human-caused climate change is not clearly determinable so far, but will likely matter greatly in the future. For about three quarters of the forest, the ability to recover from perturbation has been decreasing since the early 2000s, which the scientists see as a warning sign. The new evidence is derived from advanced statistical analysis of satellite data of changes in vegetation biomass and productivity. |
| Lensless camera captures cellular-level, 3D details in living tissue Posted: 07 Mar 2022 08:29 AM PST The lensless Bio-FlatScope is a small, inexpensive camera to monitor biological activity that can't be captured by conventional instruments. The device could eventually be used to look for signs of cancer or sepsis or become a valuable endoscopy tool. |
| Cell division in microalgae: Mitosis revealed in detail Posted: 07 Mar 2022 06:17 AM PST Cell division ensures growth or renewal and is thus vital for all organisms. However, the process differs somewhat in animals, bacteria, fungi, plants, and algae. Until now, little was known about how cell division occurs in algae. Researchers have used confocal laser scanning microscopy (CLSM) to capture the very first high-resolution three-dimensional images of cell division in live cells of the microalga Volvox carteri, and have identified new cellular structures involved in the process. |
| Posted: 07 Mar 2022 06:17 AM PST Scientists have long tried to use graphene, which is composed of carbon, as a kind of sieve. But this material doesn't have any pores. Now, a team has found an alternative material which comes with pores from the outset. |
| Electric Truck Hydropower, a flexible solution to hydropower in mountainous regions Posted: 07 Mar 2022 06:17 AM PST Researchers have developed an innovative hydropower technology based on electric trucks that could provide a flexible and clean solution for electricity generation in mountainous regions. |
| Cameras reveal snowshoe hare density Posted: 07 Mar 2022 06:17 AM PST The number of hares in a forest is a good indicator of how healthy that ecosystem is -- and now there's a better way to find out. A new study shows recently developed camera-trapping methods could be a viable alternative to live-trapping for determining the density of snowshoe hares and potentially other small mammals that play a critical role in any forest ecosystem. |
| Is it working? Scientists say gene variant indicates effectiveness of immunotherapy for allergies Posted: 07 Mar 2022 06:17 AM PST Although sublingual immunotherapy (SLIT) has become an effective treatment option for many allergies, about 20-30 percent of patients don't respond to SLIT for Japanese cedar pollinosis -- a highly common disease. In a recent study, scientists reported that a specific variant of the HLA-DPB1 gene is associated with poor response to this treatment, highlighting the potential of this and similar genes as relevant biomarkers in clinical practice for predicting one's responsiveness to allergen immunotherapy. |
| Cooler waters created super-sized Megalodon Posted: 07 Mar 2022 05:23 AM PST A new study reveals that the iconic extinct Megalodon or megatooth shark grew to larger sizes in cooler environments than in warmer areas. |
| People with heart defects may be at greater risk for severe COVID-19 illness Posted: 07 Mar 2022 05:23 AM PST People with congenital heart defects who were hospitalized with COVID-19 were up to twice as likely to suffer severe illness or death from the virus compared to people who were not born with a heart defect, according to a new study. People with a heart defect plus another underlying medical condition, including heart failure, pulmonary hypertension, Down syndrome, diabetes or obesity, were among those most at risk of having severe COVID-19 illness. |
| Pig grunts reveal their emotions Posted: 07 Mar 2022 05:23 AM PST We can now decode pigs' emotions. Using thousands of acoustic recordings gathered throughout the lives of pigs, from their births to deaths, an international team of researchers has translated pig grunts into the emotions they appear to express. |
| Higher risk of temperature-related death if global warming exceeds 2°C Posted: 07 Mar 2022 05:23 AM PST The death rate linked to extreme temperatures will increase significantly under global warming of 2°C, finds a new report. Temperature-related mortality -- where a death is directly linked to climate temperature -- in England and Wales during the hottest days of the year will increase by 42% under a warming scenario of 2°C from pre-industrial levels. This means an increase from present-day levels of around 117 deaths per day, averaged over the 10 hottest days of the year, to around 166 deaths per day. The findings underline the importance of keeping global warming levels to below 2°C. |
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