Iowa Department Of Transportation Director Mark Lowe joins Jeff to discuss the implications for Iowa roads and bridges of an infrastructure bill making its way through Congress; NBC Radio News Correspondent Michael Bower and Jeff talk over the reasons for their plunging retirement accounts (SPOILER: it's China); Psychologist Dr. John Huber promotes "mental health warrants" as a solution to mass shootings but listeners have concerns; Dentist Dr. Lynn Lipskis discusses how diet impacts your sleep. Click to hear hour 2 of Need To Know With Jeff Angelo for 8/6.