In the last segment of this Il était une fois... episode on technology, we learn more about what vertical farms can do to help the planet thrive. The first commercial vertical farm recently opened in Singapore.

Our eco-friendly home show representative explains the benefits of cellulose wadding versus fiberglass, two insulation materials commonly used in houses.

The students present the Maestro with various solutions for eliminating pollution on our planet, including vertical farms and biotechnology.

A group of smart young people found revolutionary ways to solve our planet's woes. Electronic books, Internet mail and much more...

Modern technology comes to the rescue! Planet Earth has a chance of recovering from man-made pollution.

Technology not only helps clean up our planet, but also allows us to explore the entire universe. According to the astrophysicist Alfred Vidal-Madjar, in five hundred years, we will have visited all the planets in the solar system.

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.

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 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.

France's Aube department has the highest concentration of wind energy in the country, which makes it the perfect place to experiment with new wind technologies and create a model for all of Europe.

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.

Human rights are an important world issue, and children's rights are no exception. In this Yabla exclusive, Marie and Sakhoura list the key points of the United Nations Convention on the Rights of the Child.

The French town of Morlaix is educating its citizens on the dangerous effects of global warming and what they can do to stop it. Their first defense against climate change: an electric bike!

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