Oil traders still grappling with an unprecedented pipeline bottleneck in the U.S. Midwest that roiled global energy markets last year should beware: Canada may be next. The pipelines that carry crude from Alberta's oil sands and the Bakken shale fields of North Dakota to U.S. refiners may run out of capacity as soon as 2015, some analysts now warn. Fears that the export of Canadian crude will be constrained have risen recently as a result of pipeline project delays and the unyielding growth of North Dakota output. Any resulting glut could weaken Canadian oil prices, depress profits for producers like Suncor Energy ... (full story)