How To Hold Back The Ocean (Encore)

As climate change melts the polar ice caps and raises sea levels, how will we adapt? We visit two locations: On Sapelo Island Georgia, the last remaining Gullah Geechee community fights to save their ancestral lands from the flood waters. Instead of leaving their land, or building a giant sea wall, they've chosen to use oysters to create what's called a living shoreline. We take a look at how they're built and if they're working. Meanwhile, in New York, the Army Corps wants to construct seagates to protect the city from another Hurricane Sandy. But, the gates could have massive ecological repercussions and, they might not even work. Scientists think there's a better way to work with the local ecology and protect residents.