I like adding carbon to the scraps I compost by mixing in some shredded newspaper and Yellow/White Pages books (bot not glossy magazines).
What should I check for to make sure I am not adding chemicals that might have a negative impact on the soil or my health (after eating vegetables grown in that compost)? Those chemicals could be in the paper itself or the ink on the paper.
What specifically should I ask the people who print the newspapers and other publications?
NB: I am aware of this related question, but my question is related to commercially printed material, not office/home-printed paper.