Millions of NPR listeners trust Steve Inskeep to help them make sense of the news. The Morning Edition anchor manages to sound simultaneously knowledgeable about the facts and curious about the human side of stories — attributes of an incisive interviewer and author. Inskeep’s third book, Imperfect Union: How Jessie and John Frémont Mapped the West, Invented Celebrity, and Helped Cause the Civil War , follows an ambitious couple through some decisive events in American history. On Second Thought