I contribute monthly (i.e. curate the playlist and talk about the music) to a show called 'Cultural Popcorn' on Radio 614 in Columbus, Ohio. My next episode in April (on the 23rd, just after Earth Day) will be dedicated to environmental music.
If you'd like to submit your song, please email me at: email@example.com by the end of March. Please also include a short bio, the story behind the track and the song's lyrics (if it's not in English, a rough translation would be helpful).
I'll get back to everyone with feedback, even if I don't use the song in the end (due to show’s time constraints, for instance).
P.S. Here are the links to both the radio and to the show's archive on Mixcloud for your reference: