Tracking the Effects of Air Pollution on Urban Gardens
City-grown tomatoes taste sweeter until soot dims their shine. Urban gardeners now track invisible pollutants to keep harvests healthy. Why Urban Air Leaves Invisible Fingerprints on Garden Beds Traffic emits ultrafine carbon that drifts three stories high and lands on kale leaves. The particles clog stomata, forcing plants to exhale more water. Photochemical smog forms…