During this time of volatile oil prices, here is another post for the map nerds among us. Of course, where pipelines are unavailable oil will flow by train, truck, or barge. Not as safe as a pipeline, perhaps, but market forces are difficult to deny. Now if we had a map supplement to show the marine routes for ships carrying oil (e.g., from Alaska to the West Coast), that would help round out the picture for the US and Canada.
Where the Oil Flows
A Cup of Brouhaha 