War may be hell, but it has actually made humanity safer and more prosperous, according to Stanford University history professor Ian Morris. He joins us to talk about his latest book, "War! What is Good For...Conflict and the Progress of Civilization from Primates to Robots." Morris' other books include "Why the West Rules - For Now: The Patterns of History, and What They Reveal about the Future." Later in the hour, we'll check in with filmmaker Ken Burns about his new documentary on President Lincoln's Gettysburg Address and its contemporary relevance.
How Conflict Drives Human Progress
Ian Morris, author and professor of classics and history at Stanford University
Ken Burns, award-winning filmmaker and historian whose films "The Address," "The Civil War" and "Baseball"