Bloomberg: Facebook Inc. set a goal of running half its operations with clean energy by the end of 2018, and eventually expects to reach 100 percent. Facebook is also planning to build a data center in Fort Worth, Texas, that will run solely on renewable energy, the Menlo Park, California-based company said on its website Tuesday. A growing number of technology companies are turning to clean energy to run data centers and other sites that consume significant amounts of power. Google Inc. gets 35 percent of...