Theodor Seuss "Ted" Geisel (1904-1991), better known to the world as Dr. Seuss, published The Lorax in 1971. One of Seuss’s most obviously political children’s books ,The Lorax is a story of the destruction of the environment in the greedy pursuit of wealth. The Lorax speaks for the Truffula trees that the Once-ler is chopping down to make Thneeds (the things that everyone needs). Using a frame narrative, the Once-ler tells his story to a young boy about how the Lorax left after the Once-ler’s shortsighted business model cut down all of the Truffula trees and displaced the local ecology. 

The crucial lesson of The Lorax about conservation and ecological disaster is that "unless someone like you cares a whole awful lot, nothing is going to get better. It's not." The important piece of the story’s ending, is that there is hope yet for the Truffula trees. The now-regretful Once-ler possesses a seed, the last Truffula tree seed, and with that seed, the chance for a better world.