The kids are frustrated with how slow things seem to be progressing, but Maestro boosts their enthusiasm with some good news: Their search for a workspace is over, and a new environmental movement is born — The Guardians of the Planet!

Written and sung by Lynn Ahrens for Schoolhouse Rock, this song teaches about the pilgrims, from their arrival in America up to the Boston Tea Party.

Maestro takes the kids across the world to show them what is being done to deal with the worst issues related to waste and pollution.

Traveling aboard the flying globe that Maestro himself has invented, the young environmentalists set out to see the situation in other parts of the world up close.

Maestro shows what can happen at conferences on the environment, where the blame is passed from person to person and little is resolved. But he also sees the necessity of paying attention to such issues, and encourages the kids to continue with their own plans to promote change.

Piggeldy and his big brother Frederick are out and about again, discovering and learning about the world. This time they set out to find where the sky begins.

Maestro listens as the kids tell him about all the things they see going wrong in the world, their fears, and their frustration that so little is being done. He wants to know if they have any solutions.

The group is concerned about global and environmental issues. They want to take action, but must find a base to work from. Meanwhile, off the coast of Brittany, a new environmental disaster is occurring...

This animated video shows how tuberculosis, still a very common disease, spreads and is fought by our bodies. Find out more about MSF’s work treating tuberculosis around the world.

The trolley problem is a classic thought experiment in moral philosophy. Is sacrificing one life to save the lives of many others the best possible outcome?

This Schoolhouse Rock video is about interjections, which are used to express emotions. Fun fact: the singer of this song, Essra, also sang on Sesame Street and wrote a number of pop hits by artists such as Cyndi Lauper and Tina Turner.

This classic Schoolhouse Rock song about adjectives first aired on American TV in the mid-1970s. It’s a particularly groovy way to learn about these important words, which are useful for describing people, places, and things. Unpack your adjectives!

This up-tempo song from Schoolhouse Rock helps us to understand what a noun is. Generally, it's any person, place, or thing, which the song shows with helpful examples!

What would happen to you if a black hole the size of a coin suddenly appeared in your pocket? Let's find out!

Plato is considered one of Philosophy’s greatest writers. He was able to conceive of greater realities by imagining how much poorer our perception would be if we had lived our whole life as prisoners locked in a cave.