Many villages such as Doudou are threatened by encroaching desert sands. Barley will help the villagers to protect themselves against the desertification and to preserve their environment by growing a fortress of trees around the village.
Many children are victims of child labour. Adults such as Mr. Kro force them to work and stop them from going to school and playing. GAnion reminds us that it is forbidden to use child labour and that it must be fought against.