Zac Efron Joins More Stars in Bill Nye's Earth Day Musical - Watch Now!

Zac Efron was one of the many celebs who joined forces with Bill Nye on Earth Day to present a special musical to fans. Earth Day! The Musical was a fun video shared to Facebook Watch and it included such stars as Justin Bieber, Charli D’Amelio, Dixie D’Amelio, Steve Aoki, and more. Bill collaborated with