Des Moines Register: Opponents of three carbon capture pipelines proposed in Iowa and surrounding states want federal regulators to call for a moratorium on construction, saying current safeguards are inadequate to protect people who live near the projects. About three dozen environmental, public health and tribal groups on Monday asked the U.S. Pipeline and Hazardous Materials Safety Administration to call for a delay in action on state carbon capture pipeline permits until the agency establishes new safety guidelines.