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154,972 articles from ScienceDaily

Detailed insight into friction: How objects start to slide

Chemists and physicists shed light on a crucial aspect of friction: how things begin to slide. Using fluorescence microscopy and dedicated fluorescent molecules, they are able to pinpoint how and when the friction at the contact between two objects is overcome and sliding starts to occur. They report on the details of this important transition from static to dynamic friction.

Motherhood at work: Exploring maternal mental health

Up to 1 in 5 women in the postpartum period will experience a mental health disorder like postpartum depression or generalized anxiety disorder. How an organization handles a mother's return to work can have a significant impact on her mental health, according to new research.

Indoor air quality experiments show exposure risks while cooking, cleaning

When you're cooking or cleaning inside your home, what chemicals are you breathing, and are they potentially harmful? Chemists have given us a solid start on the answer. A large, collaborative research experiment recently attempted to map the airborne chemistry of a typical home. Researchers performed typical home activities like cooking and cleaning and used sophisticated instrumentation to...

Warming oceans are changing Australian reef fish populations

Shallow reefs and the creatures that inhabit them are changing due to rising ocean temperatures, but these impacts have been obscured by a lack of comprehensive local data. A team of researchers has been tracking changes in the country's reefs for over a decade, and they now describe how they used fine-scale data to illustrate how warming waters impact tropical and temperate reef fish communities...

Tiny swimming robots treat deadly pneumonia in mice

Engineers have developed microscopic robots, called microrobots, that can swim around in the lungs, deliver medication and be used to clear up life-threatening cases of bacterial pneumonia. In mice, the microrobots safely eliminated pneumonia-causing bacteria in the lungs and resulted in 100% survival. By contrast, untreated mice all died within three days after infection.

Accurate assessment of heart rhythm can optimize chemotherapy use

Using the wrong mathematical formula to assess heartbeat rhythms may lead oncologists to inappropriately stop life-saving chemotherapy, according to a new study. Standardizing the mathematical formulas for measuring heartbeat rhythms with electrocardiograms, and avoiding one commonly used formula, could reduce this unintended outcome, the researchers reported.

Anthropogenic air pollution more significant than desert dust

At the beginning of the year, the World Health Organization (WHO) announced that the Middle East ranks among the regions with the worst air quality. There is a common misconception that desert dust is the most significant cause of air pollution from particulate matter in this region, but a new study has shown that more than 90 percent of the particulate matter that is detrimental to health...

Babies react to taste and smell in the womb

Scientists took 4D ultrasound scans of 100 pregnant women to see how their unborn babies responded to flavors from foods eaten by their mothers. The research team scanned some mothers to see fetal facial reactions to the kale and carrot flavors.

Researchers create synthetic rocks to better understand how increasingly sought-after rare earth elements form

Researchers have shed new light on the formation of increasingly precious rare earth elements (REEs) by creating synthetic rocks and testing their responses to varying environmental conditions. REEs are used in electronic devices and green energy technologies, from smartphones to e-cars. The findings, have implications for recycling REEs from electronic waste, designing materials with advanced...