Reuters: Replacing the Keystone XL pipeline with oil-laden freight trains from Canada may result in an average of six additional rail-related deaths per year, according to a U.S. State Department report that is adding to pressure for President Barack Obama to approve the line. The long-awaited study, released on Friday, focused on the environmental impact of TransCanada's $5.4 billion pipeline, but also spent several pages analyzing the potential human impact of various ways to transport oil, using historical...