In case you can’t tell, I’ve been on a bit of an academic article kick recently. I just found a new journal: Green Theory and Praxis: The Journal of Ecopedagogy. There isn’t an ESL / EFL focus, but a lot of what they discuss fits well within content-based instruction or critical pedagogy. Their archive is available for free, and there is lots of great stuff in there. I’m not 100% whether or not the journal is still publishing (the last issue was in 2009) but it’s definitely worth checking out.
I’m also adding it to my page of journals with open online archives.