"The environmental footprint of many other segments of the supply chain have yet to be adequately quantified - but with 250,000 pages of advertising produced annually by the "enormous and complex industry," there is a lot of paper, ink, distribution and waste to be addressed. Carli framed the effort as "singularly challenging." Speakers emphasized the need for publishers to get out in front of the sustainability issue before it bites them." (Quoted from article)