Obviously taking an "eco" approach into design is a crucial concern these days, which is also obviously a good thing. Paper reps sit down with me each month extolling the eco-credentials and sustainability of their stocks with claims that this stock is ECF (elementally chlorine free), FSC (forest stewardship council), WMF (well managed forests), PCW (post consumer waste) and either EMAS or ISO14001 (mill certifications)... which is all well and good.