One hundred years ago this spring, Congress voted to declare war on Germany, thrusting the nation into World War I. The Smithsonian is looking back on the conflict and its lasting impact, and this hour we’ll talk about some of the highlights. We’ll be joined by Diane Wendt, who curated the “Modern Medicine and the Great War” exhibition at the National Museum of American History. And we’ll also talk with Lynn Heidelbaugh, who curated “My Fellow Soldiers: Letters from World War I” at the National Postal Museum.