Newtown Creek
Laura Silver

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It's been 19 years since the Exxon tanker Valdez coated Alaska's Prince William Sound with 11-million gallons of oil. Today on our show, we revisited a bigger plume of oil closer to home: New York City's Newtown Creek.

Basil Seggos, chief investigator for the environmental advocacy group Riverkeeper, told us how 17-million gallons of oil got there and what's being done to get rid of it.

Recently, I took a bike ride along the creek — the slideshow above is what I saw.