► For the first time, investors are raising concerns about the risks associated with train loads of oil. A group of faith-based investors have asked ConocoPhillips, Exxon and railroad operator Union Pacific to provide reports on the fiscal and reputational risks "linked to various kinds of disasters resulting from shipping crude oil and natural gas by rail." There has been a string of explosive accidents involving derailed oil-laden trains—including four in the U.S. and Canada since mid-February.