I've compiled my top 5 children's environmental movies.
Ferngully is about a group of fairies who need to protect their rain-forest home from humans who want to cut down their trees for wood.
Environmental theme: deforestation
The Jetsons, America's favorite future-family, have moved to Orbiting-Ore Asteroid, where a new mining colony has opened. However, the factory is drilling into aliens' community and ruining their homes.
Environmental theme: habitat destruction
Mimzy, a stuffed rabbit with psychic powers, travels back from the future to try to save future-humans from their damaged DNA, caused by ecological problems.
Environmental theme: genetic pollution
2) WALL-E (2008): Oscar-winning Pixar movie with a dystopia-point-of-view of the future of humanity.
WALL-E is the last trash-compactor robot left on Earth to clean up the extreme trash left by humans, who are living a lazy lifestyle in space.
Environmental theme: overconsumption
1) Monsters, Inc.(2001): Oscar-nominated Pixar movie with a touching story about the monsters in your closet.
Monsters Inc. is the main power company for Monstropolis, using energy generated by human-children's screams. Due to children becoming impervious to scaring tactics, Monsters Inc. is having difficulty finding enough energy.
Environmental theme: nonrenewable energy
Homer Simpson, the lovable but bumbling protagonist, has polluted Springfield's lake due to his pet pig, Spider Pig. President Schwarzenegger has ordered a glass dome to cover Springfield, with the intent of blasting the problem away.
Environmental theme: pollution