This classic Dr. Seuss story tells the tale of the Once-ler, an industrious new comer who exploits a beautiful paradise, and the Lorax, who "speaks for the trees, for the trees have no tongues" and warns the Once-ler of the perils of overuse.
"The Lorax" is an engaging and educational tale with a hopeful message for the future.  Although it is intended to appeal to younger children its message is one we could all heed. Planet Ark's website contains the 24 minutes cartoon adaptation as part of its promotion for Get Growing on Schools Tree Day, Friday 31st July 2009. The book of The Lorax is published by Random House (ISBN: 0394823370).

There are many useful resources and links for schools - and everyone interested in planting trees.