The bottom line message of this beautiful song is to leave the world well. That makes it perfect for Earth Day. However, the lyrics and the message can have a broader meaning. Life lessons and character development come to mind.
Though the song is slow and meant to be sung in a head voice, it is still accessible to your younger singers. The melody is not difficult, and the whole song is unison. The kit includes sign language, in case you'd like to add a bit of a challenge. (from Music K-8, Vol. 11, No. 4)