Article: Oil pipelines keep American moving

Oil pipelines are frequently in the news these days because they can have a big effect on oil prices. For example, if a war or terrorist activity threatens to shut down an important pipeline, oil prices can rise. Oil pipelines also make the news when they leak.

One of the best-known pipelines in the United States is the Trans Alaska Pipeline System. It stretches north-to-south for 800 miles across the state of Alaska. The oil comes out of the ground at the North Slope near Prudhoe Bay, flows down the pipeline to the port of Valdez, loads onto a supertanker, floats down to the west coast, unloads into another pipeline and makes its way to a refinery. The Alaska pipeline is needed because ...

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