By now we should all know that infectious pathogens — like COVID-19 — can be transmitted from person to person through coughing and sneezing. But did you know it may be transmitted simply by talking, too? In a study published just this month in the Proceedings of the National Academy of Sciences, researchers found that normal human speech produces thousands of respiratory droplets that can linger in the air for up to 14 minutes. Basically, every time ...