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03/19/2017 | 7m 19s
New York’s Bronx River—once an open sewer—is now teeming with life. We discovered oysters, eels, herons, and even beavers, as we canoed through the poorest congressional district in America.
Aired: 03/19/17
Video has closed captioning.Cities once converted streams into sewers to make room for development.
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New York’s Bronx River—once an open sewer—is now teeming with life.
Saving San Francisco’s Sea Lions
The Marine Mammal Center in the San Francisco Bay Area is on a mission to save sea lions.
Nature is taking over at North Brother Island, the former home of a typhoid hospital.
The salt marshes in New York's Jamaica Bay support endangered birds and rare turtles.
Hiking Through History in The Presidio
What was San Francisco like before Europeans arrived? Look no further than The Presidio.
Want to know what Chicago looked like 200 years ago? Head to the city’s southeast corner.
