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When an oil-laden train derailed last weekend, it turned into an inferno that killed dozens in Lac-Megantic, a small town in Quebec.
This week, the Canadian tragedy is morphing into something very different. It is becoming Exhibit A in the political case for building pipelines — as well as for opposing them.
LISTEN: NPR's Marilyn Geewax Discusses The Pipeline Debate On 'Hear & Now'