My kind of Earth Day? Very funny in a Captain Underpants way.
I checked the Chronicle of Higher Education just to see what was under religion in the Research and Books Column and found this.

If Creation Is a Gift, by Mark Manolopoulos (State University of New York Press;
187 pages; $65). Draws on the work of Jacques Derrida and Jean-Luc Marion in a
study that applies postmodern gift theory to ecological and "ecotheological"
concerns.

How apropos. I don't think I've seen the term, "ecotheological" before.