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40 articles from ScienceDaily

How to gain a sense of well-being, free and online

In 2018, when Professor Laurie Santos introduced her course 'Psychology and the Good Life,' a class on the science of happiness, it became the most popular in the history of Yale, attracting more than 1,200 undergraduate enrollees that first semester. An online course based on those teachings became a global phenomenon. By latest count, 3.38 million people have enrolled to take the free...

Reliably measuring oxygen deficiency in rivers or lakes

Wastewater carries large quantities of organic substances into the rivers and lakes, leading to heavy growth of bacteria and oxygen deficiency. Measurement methods have so far been incapable of measuring this organic pollution precisely. A new method should provide a clear image of the water conditions in the future.

Using sound waves to make patterns that never repeat

Mathematicians and engineers have teamed up to show how ultrasound waves can organize carbon particles in water into a sort of pattern that never repeats. The results, they say, could result in materials called 'quasicrystals' with custom magnetic or electrical properties.

Tiny wireless implant detects oxygen deep within the body

Engineers have created a tiny wireless implant that can provide real-time measurements of tissue oxygen levels deep underneath the skin. The device, which is smaller than the average ladybug and powered by ultrasound waves, could help doctors monitor the health of transplanted organs or tissue and provide an early warning of potential transplant failure.

ER visits for suicidal behavior declined during the first 8 months of pandemic, Michigan study finds

While people may expect suicide rates to rise during a worldwide crisis such as the COVID-19 pandemic, a new study suggests the onset of the pandemic and state of emergency executive orders likely did not increase suicide-related behavior in the early months of the outbreak. The report found that emergency room visits related to suicide attempt and self-harm decreased by 40 percent during the...

In pig brain development, nature beats nurture

Before humans can benefit from new drug therapies and nutritional additives, scientists test their safety and efficacy in animals, typically mice and rats. But, as much as they've done for biomedical research, rodents aren't always the best research model for studies on neonatal brain development and nutrition. That's where pigs can play an important role.

How we can reduce food waste and promote healthy eating

Food waste and obesity are major problems in developed countries. They are both caused by an overabundance of food, but strategies to reduce one can inadvertently increase the other. A broader perspective can help identify ways to limit food waste while also promoting healthy nutrition, researchers suggest.

Roadside invader: The higher the traffic, the easier the invasive common ragweed disperses

Common ragweed is an annual plant whose allergenic pollen affects human health. It's an invasive species particularly well-adapted to living at roadsides. New research found high population growth along high-traffic roads even in shaded and less disturbed road sections, suggesting that seed dispersal by vehicles and by road maintenance can compensate, at least partly, for less favorable habitat...

Climate change is making it harder to get a good cup of coffee

Ethiopia may produce less specialty coffee and more rather bland tasting varieties in the future. This is the result of a new study by an international team of researchers that looked at the peculiar effects climate change has on Africa's largest coffee producing nation. Their results are relevant both for the country's millions of smallholder farmers, who earn more on specialty coffee than on...

Get your head in the game -- One gene's role in cranial development

Researchers have found that certain cells in mouse craniums respond to increased expression of a gene called Dlx5 during early stages of embryonic development. They observed that a layer of these cells formed more bone and cartilage in mice engineered with high Dlx5 levels. Their interesting results provide crucial information for the mechanistic role of this gene in cell fate during cranial...