Why you should watch Supergirl, The Voice and more
Filmed over a four year span, this series examines Earth's complex ecological challenges.
Season 4, Episode 1
July 19, 2017
Part 1 of 2. A look at people who work with charities in Bangladesh.
Season 4, Episode 8
June 24, 2017
The aftermath of the 1980 eruption of Mount St. Helens; and the world's most sulfuric volcano, which is located in Indonesia.
Season 4, Episode 7
A visit to Italy spotlights its many active volcanoes.
Season 4, Episode 6
Efforts to preserve the environment in Senegal are detailed.
Season 4, Episode 5
Spotlighting men and women who are working to preserve the environment in Senegal.
Season 4, Episode 4
Examining Quebec's hydroelectric dams and the environmental problems related to them. Also: an architect who works with reclaimed materials.
Season 4, Episode 3
Prince Charles discusses his work to preserve forests. Also: animal behavior expert Temple Grandin.
Season 4, Episode 2
Conclusion. Profiling a couple who run a floating hospital in Bangladesh.
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