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Slo-mo sneeze physics could help keep infections at bay

A group of scientists studying an infectious bodily emission of hot moisture—a sneeze—has imaged the act in slow-motion, NPR reports. The researchers invited volunteers with cold or flu symptoms to sneeze in a room controlled for airflow, moisture, and temperature, and recorded the event on a high-speed camera, as they published in The New England Journal of Medicine, where they included the slo-mo sneeze footage. They plan to study the resulting wet clouds to better understand how to prevent the disease-laden water droplets from infecting others. For now, they say, sneezing into your elbow is your best bet.