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| Ultrashort-pulse lasers kill bacterial superbugs, spores Posted: 23 Nov 2021 01:28 PM PST Researchers at Washington University School of Medicine in St. Louis have found that multidrug-resistant bacteria and bacterial spores can be killed by ultrashort-pulse lasers. The findings could lead to new ways to sterilize wounds and blood products without damaging human cells. |
| How moles change into melanoma Posted: 23 Nov 2021 01:28 PM PST Melanoma researchers published a study that gives a new explanation of what causes moles to change into melanoma. These findings pave the way for more research into how to reduce the risk of melanoma, delay development, and detect melanoma early. |
| Microbes can provide sustainable hydrocarbons for the petrochemical industry Posted: 23 Nov 2021 01:28 PM PST The petrochemical industry turns oil and gas into precursors used to synthesize lubricants and other critical products. Chemists show that bacteria can be metabolically engineered to generate similar precursors, providing a sustainable replacement for fossil fuels and using less energy. The microbes need only glucose. The medium-chain hydrocarbons they produce can be broken down into shorter chains and polymerized into plastics, or lengthened to make products such as diesel. |
| One year on this giant, blistering hot planet is just 16 hours long Posted: 23 Nov 2021 01:27 PM PST Astronomers have discovered an ultrahot Jupiter with shortest orbit of any known gas giant planet. |
| Aspirin is linked with increased risk of heart failure in some Posted: 23 Nov 2021 10:14 AM PST Aspirin use is associated with a 26% raised risk of heart failure in people with at least one predisposing factor for the condition. |
| Latte lovers rejoice! Study reveals drinking coffee could lower the risk of Alzheimer’s disease Posted: 23 Nov 2021 10:14 AM PST Good news for those of us who can't face the day without their morning flat white: a long-term study has revealed drinking higher amounts of coffee may make you less likely to develop Alzheimer's disease. |
| Prehistoric mums may have cared for kids better than we thought Posted: 23 Nov 2021 10:14 AM PST A new study has revealed the death rate of babies in ancient societies is not a reflection of poor healthcare, disease and other factors, but instead is an indication of the number of babies born in that era. |
| Can we perceive gender from children's voices? Posted: 23 Nov 2021 10:13 AM PST Researchers report developing a database of speech samples from children ages 5 to 18 to explore two questions: What types of changes occur in children's voices as they become adults, and how do listeners adjust to the enormous variability in acoustic patterns across speakers? When they presented listeners with both syllables and sentences from different speakers, gender identification improved for sentences. They said this supports the stylistic elements of speech that highlight gender differences and come across better in sentences. |
| Meat-eating 'vulture bees' sport acidic guts Posted: 23 Nov 2021 10:10 AM PST A little-known species of tropical bee has evolved an extra tooth for biting flesh and a gut that more closely resembles that of vultures rather than other bees. |
| Ancient human relative, Australopithecus sediba, 'walked like a human, but climbed like an ape' Posted: 23 Nov 2021 10:08 AM PST The recovery of new lumbar vertebrae from the lower back of a single individual of the human relative, Australopithecus sediba, and portions of other vertebrae of the same female from Malapa, South Africa, together with previously discovered vertebrae, form one of the most complete lower backs ever discovered in the early hominid record and give insight into how this ancient human relative walked and climbed. |
| Analysis of Mars’s wind-induced vibrations sheds light on the planet’s subsurface properties Posted: 23 Nov 2021 10:07 AM PST NASA's Mars mission InSight probes the geology of the Elysium Planitia, finding alternate layers of basalt and sediments. An international team of scientists compares on-the-ground data with data from models, which helps to understand, e.g., the surface's load-bearing capacity and trafficability. |
| Taking it easy as you get older? Wrong Posted: 22 Nov 2021 02:27 PM PST A team of evolutionary biologists and biomedical researchers lay out evolutionary and biomedical evidence showing that humans, who evolved to live many decades after they stopped reproducing, also evolved to be relatively active in their later years. The researchers say that physical activity later in life shifts energy away from processes that can compromise health and toward mechanisms in the body that extend it. They hypothesize that humans evolved to remain physically active as they age -- and in doing so to allocate energy to physiological processes that slow the body's gradual deterioration over the years. This guards against chronic illnesses such as cardiovascular disease, type 2 diabetes, and even some cancers. |
| Posted: 22 Nov 2021 10:53 AM PST In high enough concentrations, milkweed can kill a horse, or a human. To be able to eat this plant, monarchs evolved a set of unusual cellular mutations. New research shows the animals that prey on monarchs also evolved these same mutations. |
| By keeping ferroelectric 'bubbles' intact, researchers pave way for new devices Posted: 19 Nov 2021 12:55 PM PST Scientists have discovered that ferroelectric bubbles remain intact and retain their electronic and electromechanical (piezoelectric) properties in a freestanding state. The discovery offers promise for novel microelectronics and energy-related applications. |
| COVID-19 vaccine elicits weak antibody response in people taking immunosuppressant Posted: 19 Nov 2021 12:55 PM PST People taking TNF inhibitors, a kind of immunosuppressive drug used to treat rheumatoid arthritis and other autoimmune conditions, produced a weaker and shorter-lived antibody response after two doses of Pfizer's COVID-19 vaccine, according to a new study. A third vaccine dose drove antibody levels back up, indicating that this additional dose may provide protection as the virus's delta variant continues to spread. |
| Posted: 19 Nov 2021 12:55 PM PST Speech sounds elicit comparable neural responses and stimulate the same region in the brain of humans, macaques and guinea pigs, researchers report. The finding could help pave the way for better understanding and diagnosis of auditory processing deficits. |
| Posted: 19 Nov 2021 05:51 AM PST 'Plague sceptics' are wrong to underestimate the devastating impact that bubonic plague had in the 6th to 8th centuries CE, argues a new study based on ancient texts and recent genetic discoveries. The same study suggests that bubonic plague may have reached England before its first recorded case in the Mediterranean via a currently unknown route, possibly involving the Baltic and Scandinavia. |
| Chemotherapy may affect muscle cells at lower doses than previously thought Posted: 18 Nov 2021 05:37 PM PST Previous research has found that chemotherapy can trigger muscle loss in people living with cancer, but a new study out of found it may also affect the way the body builds new muscle -- and at lower doses than previously known, having potential implications for treatments and rehab programs. |
| Researchers unlock the potential of trees for managing environmental impacts in cities Posted: 18 Nov 2021 05:37 PM PST Researchers have conducted an empirical field study and concluded that single urban trees, such as street trees, function differently than trees grown in clusters featuring significantly greater transpiration rates. This result offers a new understanding of how to manage the landscape in urban settings to reduce the harmful effects of stormwater runoff. |
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