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ScienceDaily: Top Environment News |
| 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. |
| 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. |
| 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. |
| 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. |
| Snow cover critical for revegetation following forest fires Posted: 22 Nov 2021 02:26 PM PST With wildfires devastating mountain ecosystems across the western United States, their successful forest revegetation recovery hinges on, among other factors, an adequate lasting snowpack, according to new research. |
| 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. |
| 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. |
| 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. |
| A stunning 3D map of blood vessels and cells in a mouse skull could help scientists make new bones Posted: 18 Nov 2021 05:36 PM PST Scientists have used glowing chemicals and other techniques to create a 3D map of the blood vessels and self-renewing 'stem' cells that line and penetrate a mouse skull. The map provides precise locations of blood vessels and stem cells that scientists could eventually use to repair wounds and generate new bone and tissue in the skull. |
| New research could help boost growth of clean cooking in sub-Saharan Africa Posted: 18 Nov 2021 05:36 PM PST Researchers have new evidence that could help rapidly boost efforts to scale-up the adoption of clean cooking with liquefied petroleum gas (LPG) in sub-Saharan Africa. The new study suggests that supply-side interventions such as shortening the distance to LPG retail points and improving access to multi-burner LPG stoves could help increase the consumption of the clean cooking fuels, for the benefit of public health, gender equality and environmental protection. |
| Simulation reveals molecular footprint of organic air pollutants Posted: 18 Nov 2021 05:35 PM PST Joining the global effort to curb air pollution, researchers have developed computational tools to accurately assess the footprint of certain organic atmospheric pollutants. Their simulation could help government agencies keep a closer check on human-made sources of carbon-based pollutants. |
| Tech companies underreport CO2 emissions Posted: 18 Nov 2021 05:35 PM PST Companies in the digital technology industry are significantly underreporting the greenhouse gas emissions arising along the value chain of their products. Across a sample of 56 major tech companies surveyed, more than half of these emissions were excluded from self-reporting in 2019. At approximately 390 megatons carbon dioxide equivalents, the omitted emissions are in the same ballpark as the carbon footprint of Australia. The research team has developed a method for spotting sources of error and calculating the omitted disclosures. |
| Bacteria may be key to sustainably extracting earth elements for tech Posted: 18 Nov 2021 03:16 AM PST A new study describes a proof of principle for engineering a bacterium, Gluconobacter oxydans, that takes a big first step towards meeting skyrocketing rare earth element demand in a way that matches the cost and efficiency of traditional thermochemical extraction and refinement methods and is clean enough to meet U.S. environmental standards. |
| One way genetic mutations occur during formation of eggs and sperm Posted: 17 Nov 2021 06:15 PM PST Investigators have employed mutant mice to study how the accumulation of genetic errors is managed during egg and sperm formation. |
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