Idina Menzel joined Earth Day celebrations on Thursday with an appearance on Facebook Watch’s “Earth Day! The Musical!” The video stars Bill Nye The Science Guy who joins forces with celebrities from Hollywood, music, and Broadway to spread the word and help protect the planet from climate change. In addition to Idina, stars like Justin Bieber, Maluma, Ben Platt, Tori Kelly, Zac Efron and more. Idina pops in around 2:26 and then briefly appears in group shots a little later.