658a Humble American Bragging; Why I Love Madrid; Deep Time Journey

British travel writer Richard Grant discusses the sporting sense of humor he's observed (and appreciated) behind the distinctly American talent for over-the-top bragging. Then tour guides from Madrid let us in on their favorite places to take visitors in the Spanish capital. And we ponder our place in the planet's history with author Robert Macfarlane, who shares insights gained from a decade of investigating, from a perspective of geologic time, humanity's relationship with our landscape.