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Photo by Greg Miles
After the Deepwater Horizon offshore drilling rig exploded in 2010, environmentalists surveying the damage in the Gulf of Mexico came upon a mystery. The water had oil slicks that, because of the currents, couldn’t have originated from the site of the notorious accident.
With the help of satellite imagery, they figured out that oil was leaking from a different spill, a six-year-old disaster the public knew almost nothing about. In September 2004, Hurricane Ivan had swept the legs out from under a 40-story oil-drilling platform operated by a company called Taylor Energy, causing a leak that continues to this day. It is the longest-running — and by one estimate, the largest — U.S. oil spill ever recorded, a contentious saga that prompted a recent “60 Minutes” segment.