th-1FOR TWO AND a half years, Michael Snyder began each day by strapping a device to his arm the size and shape of a large matchbox. Gray in color with a nozzle extending from its top, the box went with him everywhere, whether he was traveling abroad, hanging holiday decorations at his home in Palo Alto, or biking to his office at Stanford. Its purpose: To capture the various airborne particles he encountered in his daily life…..Read More