The description is pretentious drivel, and the point should have been made in a simpler, less costly fashion. We don't really need blowhard, self-important "artistes" to tell us pollution is bad.
Like the Godfather trilogy, the first three IJ have infinite replay value for me, but "Crystal Skull" is beyond atrocious: horrible/maudlin dialogue (probably influenced by Ford's demands), messed-up screenplay, poor CGI and concerns w/ rating. The first three were much more daring and spontaneous.