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Season 4 Preview

In the 4th year of this 7-year project exploring the planet’s most threatened ecosystems, Dr. M. Sanjayan visits northern California where the largest river restoration project in United States history is aiming to bring life back to a sacred river.

Preview Season 4 Episode 1 Length 00:30 Premiere: 04/23/25

Recent Episodes

River Restoration

S4 E1 Length 55:14 Premiere Date 04/23/25

Coral Special

S3 E1 Length 54:21 Premiere Date 04/24/24

Episode 2

S2 E2 Length 54:26 Premiere Date 04/19/23

Episode 1

S2 E1 Length 54:06 Premiere Date 04/19/23

Episode 2

S1 E2 Length 54:31 Premiere Date 04/20/22

Episode 1

S1 E1 Length 54:30 Premiere Date 04/20/22

Clips & Previews

Season 4 Preview

Preview Length 00:30 Premiere Date 04/23/25

Season 4 River Restoration Episodes

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Show Clips & Previews

River Restoration

S4 E1 Length 55:14 Premiere Date 04/23/25

Season 4 Preview

Preview Length 00:30 Premiere Date 04/23/25

See All Episodes

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