The New York Times – visual and text: “Many New Yorkers are avoiding the subway, fearful of jostling with strangers in crowded cars. Masks and social distancing are essential, but good air flow is also key to reducing the risk of exposure to the coronavirus. The subway’s ventilation system moves air within train cars more efficiently than restaurants, schools and other indoor settings, according to aerosol experts. But it is not a guarantee to protect against the virus. Here’s how the system works…”