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 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!

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.

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

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!