In our Poop Train podcast (radiolab.org/story/poop-train/), we mentioned 106-mile site -- a spot in the ocean where barges dumped NYC's waste until 1992. This footage shot in 1989 shows the submersible ALVIN, which ferried researchers below the water to collect samples and study the sludge on the sea floor. (Read more at radiolab.org/story/sludge-bottom-sea/) Video footage courtesy of Woods Hole Oceanographic Institution.

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