You can find the spoken performance on Audiomack or through digital sheet music retailers. Performance & Learning Resources
While Michael Jackson is most famous for the anthem he also wrote a deep, spoken-word piece titled "Planet Earth." originally intended for the Dangerous album (1991), it was ultimately released on the posthumous Michael Jackson's This Is It album in 2009. Overview of "Planet Earth" Michael Jackson Planet Earth
If you are looking for a musical arrangement of this piece or the related "Earth Song," several options are available: You can find the spoken performance on Audiomack
You can download piano, vocal, and guitar arrangements from FreshSheetMusic . Michael Jackson Planet Earth
Michael Jackson – Planet Earth/Earth Song (Immortal Version) Lyrics