At bookdaper.cat you can calculate the ecological footprint of your publication and apply for the official "eco edition" seal. (In catalán, castellano, and soon english too)

1. Use recycled paper and vegetable inks where possible
2. Print in the same region where you expect to sell most copies
3. Check out institut.ecoedicio.cat and icec.gencat.cat/ca/sectors/p... for guidelines and subsidies.
And ... ->