Earth Day TV list

Here’s the schedule for Earth Day TV

As Earth Day arrives (Friday, April 22), the streaming networks and PBS are piling up specials. Here’s a round-up.
–Wednesday (April 20), then at and the PBS Video app: PBS has “Changing Planet” at 8 p.m., launching a seven-year effort to study key areas. “Earth Emergency” follows at 10.
— Friday: Three films debut on Disney+ (see separate story). “Polar Bear” (shown here) is from the DisneyNature people, whose lush films are usually in theaters the week of Earth Day. The others are from National Geographic: “Explorer: The Last Tepui” follows Alex Honnold (the climber of “Free Solo” fame), as he leads a climb up a 1,000-foot cliff, so a botanist can study an “island in the sky.” Also, “The Biggest Little Farm: The Return” revisits John and Molly Chester, city people creating an eco-friendly farm in California. Read more…