By Lauren Krugel Alberta’s push for a new oil pipeline has been dredging up the ghosts of projects past. Here is a look at what happened with three ill-fated projects: KEYSTONE XL First proposed in 2008, TransCanada Corp.’s Keystone XL extension would have expanded an existing pipeline delivering crude to refineries in the U.S. Midwest and provided a direct route to the world’s biggest refining complex on the Texas coast. Canada’s energy regulator approved the plan in 2010. South of the border was another matter as activists made the project a proxy for the broader battle against climate change. The saga was marked by pipeline reroutes, lawsuits, political showdowns and high-profile protests that saw the likes of actors Margot Kidder and Daryl Hannah arrested outside the White House. Former president…
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