But if it really gone big (a lot of people ordered the printed version), we certainly can devote a percentage of revenue towards planting trees.
It takes energy to produce trees, cut them down, make paper, transport paper, print magazines, distribute magazines, throw away magazines and then (hopefully) recycle it.
This isn't a solved problem. Far from it. Why not just distribute it digitally.
I think printing yesterday's news on a piece of dead tree, transporting it and then selling it is a stupid idea...
Actually, coming back to the trees for paper-making, you can add to the downsides that usually the trees are fast-growing (e.g. eucalyptus), not 'nobler' woods (even humble pines are too slow). And the mills do smell a bit - in a particular highway route, I can tell when I'm driving past one mill I can't see. On the other hand, the process does capture carbon from CO2 ...
P.S. A good argument can be made that 'wasting resources' is the basis of human civilization, without which we'd be living in caves and frugally feeding on berries. Check out what happened because of luxuries like silk and condiments like pepper ...