After the post on Threatened Trees, a friend passed along this photo of Endangered Species Research journals, which come wrapped in heavy plastic (they are printed on acid-free paper, however).
There is no alternative.
I think the fine print on the end of the wrapper says, "No trees were harmed in the production of this wrapper." I receive a couple of magazines which can, for a small fee, be mailed in a plastic wrapper. I get them bare and they almost never have any damage.
Wasn't there already a post on being an ecodouche?