Scott, I applaud your concern about damaging the environment. Do a web search on PBS and find some emails. My advice is to not contact anyone individually--send your email to a few at the same time; that way they see that others also know about the email and so it's harder for them to ignore. If you're patient with them, you'll get to the right person.
As others mentioned, not much might happen. But if you do nothing, it's certain that nothing will happen. So it doesn't hurt to try.
A final piece of advice: there are a lot of flamers on this board. Ignore them. They feed off the attention they get from reactions to their asinine comments.
Let us know if you're successful with you efforts.