In other news Wednesday, cleanup workers struggled to clean oily waste from Lake Pontchartrain, north of New Orleans and militants targeting Shiite pilgrims in Iraq killed 38 people in attacks across Baghdad.

By tracing the paths of European settlers in the 16th century, Tony Horwitz tells the history of America's colonization of the new world during an oft-forgotten century. Ray Suarez discusses Horwitz's new book, "A Voyage Long and Strange: Rediscovering the…