In the first episode of this new cartoon series, Once Upon a Time... Planet Earth, deforestation issues are addressed from outer space... Just grow a few trees in a spaceship and plant them on land later!

The Maestro tells his students about the famous "Biosphere" project in Arizona, the largest enclosed ecological system in the world.

These young people want to do their part for the planet. Under the Maestro's supervision, they prepare a butterfly garden after learning that butterflies are an endangered species.

The Maestro surpervises the building of a pond for the butterfly garden. Everything goes according to plan, despite the work of a few practical jokesters.

In the next segment of this Il était une fois... episode on ecosystems, the Maestro teaches us how to build a butterfly garden. You can build one anywhere—even on your apartment balcony!

In this episode on the ecosystems, guide Nam explains the importance of mangroves in the food chain. You'll also see the rafflesia, the largest flower in the world.

In part seven of this episode on the ecosystems, the young students are on a field trip (a marsh trip to be exact), where they witness firsthand the destruction of this precious ecosystem. But this is not a new phenomenon: once upon a time in Polynesia...

In the final part of this Il était une fois... episode on the ecosystems, the Maestro explains what happened to the people and the famous statues of Easter Island. It's a lesson we'd do well to learn from.