ANCHORAGE, Alaska — Before the Deepwater Horizon oil spill in 2010 in the Gulf of Mexico, there was the Exxon Valdez disaster in Alaska, at the time the nation's largest oil spill.
Every day, millions of gallons of oil move from the Arctic through the trans-Alaska pipeline to the small coastal town of Valdez, 600 miles away. There, high above the waters of Prince William Sound, ...
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