A new study of the 28 most populous U.S. cities finds that all are sinking to one degree or another. The cities include not just those on the coasts, where relative sea level is a concern, but many in ...

White smoke finally billowed from the Sistine Chapel on Thursday afternoon, signaling to the world that the papal conclave ...

White smoke rose from the Sistine Chapel, signaling the election of a new pope following the death of Pope Francis last month at age 88.