CartoonsiIllustrations and drawings (whether humorous or otherwise) are considered to be opinion pieces, and as such, are subject to the criteria of their authorsEl RotoEl Roto cartoon, November 24, 2017El Roto24 Nov 2017 - 11:26 UTCWhatsappFacebookTwitterCopy linkCommentsPollution is not a problem. You can inhale through a filter and exhale through an exhaust pipeCommentsRules Archived InOpinion