Skip to main content
Access to this video is a benefit for members through PBS Passport.

Up Next

Mexico’s Sierra Pinacate

Mexico’s Sierra Pinacate

Season 6 Episode 605
26:46
Costa Rica: Laboratory of the Biosphere

Costa Rica: Laboratory of the Biosphere

Season 6 Episode 606
26:46
Oregon: Violent Past and Verdant Present

Oregon: Violent Past and Verdant Present

Season 6 Episode 608
26:46
Cuba's Far East

Cuba's Far East

Season 6 Episode 609
26:46
Chiapas Highlands: Mexico's Indian Empire

Chiapas Highlands: Mexico's Indian Empire

Season 6 Episode 610
26:46
Slickrocks and Monuments in the Four Corners

Slickrocks and Monuments in the Four Corners

Season 10 Episode 1001
26:46
Ancient peoples of the Colorado Plateau

Ancient peoples of the Colorado Plateau

Season 10 Episode 1002
26:46
The Northern Jaguar Preserve

The Northern Jaguar Preserve

Season 10 Episode 1004
26:46
Back to Show
In the America's with David Yetman

Our Warming Oceans: Biosphere to Bahamas

Season 6 Episode 604

In the Arizona desert, scientists study a small ocean at Biosphere II facility, where researchers measure sea changes under controlled conditions. But the real ocean is uncontrolled and vast. David journeys to the Bahamas to join researchers in caves and in reefs who are making startling findings about changes in climate and their effects on our oceans.