The Wump World is an unspoiled place until huge monsters bring hordes of tiny creatures from the planet Pollutus.

When he has a dream about a future Earth devastated by pollution, Walter begins to understand the importance of taking care of the environment.

Part 1. While planning to celebrate Yangchen's festival, Aang is visited by the spirit of Yangchen herself who leads him to discover a refinery on land sacred to the Airbenders that may be causing the pollution he finds there. Part 2. As Avatar Aang and his martial arts friends seek answers to the mysteries surrounding a refinery on land sacred to the Air Nomads, Toph uncovers a startling truth about her father's involvement with the refinery, while...

Follows a lawsuit brought against W.R. Grace & Co. for contaminating the drinking water in Woburn, Massachusetts.

In a place where the brown Bar-ba-loots frisk and the Humming-Fish splash around, you will find the Lorax. The Lorax speaks of the trees, which the Once-ler is chopping down as fast as he pleases. Will the Once-ler change his destructive ways and heed the wise warnings of the Lorax?

Team Avatar is in peril as a dangerously powerful ancient spirit awakens with vengeance and destruction on its mind. Bonds will be tested and new truths revealed as Aang must answer an important question: Can humans and spirits co-exist?!