I'd had some misgivings, as I was afraid that it might be yet another earth-good, humans-bad, save-the-environment, worship-Gaia piece of agitprop.
But it's not! Don't let the fact that the earth is covered with trash fool you: This is not about saving the earth.
It's about saving the humans.
My own review of the movie is here. This is destined to be a classic in your science fiction film library.
