ReviewsIs Zac Efron’s Netflix travel series ‘Down to Earth’ worth watching?Posted on July 29, 2020 (CNN) — Binge-watching Netflix’s “Down to Earth with Zac Efron” is sort of like watching Bill and Ted discover climate change. During eight, approximately 40-minute-long episodes, the actor and his health-guru buddy Darin Olien travel around the world, making earnest if not super-deep observations about ecological destruction and promising methods of fighting it.