Fig. 4From: Science communication on the public health risks of air pollution: a computational scoping review from 1958 to 2022Numbers of publications over time with (n = 84) and without (n = 6339) including the term “UFP” or “ultra-fine particles” (1958 – 2022). Note: The decrease in 2022 is most likely due to data collection in May 2022Back to article page