An adventuresome Google executive who once dated TV star Sophia Bush met a harrowing death on Mount Everest in a a series of valanches triggered by Saturday’s giant earthquake. Dan Fredinburg, of San Francisco, was the only American confirmed by Saturday night to have died in the tragedy. He died from head injuries when the avalanche slammed into his base camp, according to family members and a statement from Jagged Globe, the mountaineering company that organized his summit attempt. “Today I, and so many of my loved ones, lost an incredible friend,” said Bush, who starred from 2003 to 2012...