This is WEEKEND EDITION from NPR News. I'm Scott Simon.
Baseball is still called the national pastime, and poets still compose paeans to its subtlety and gentle pace. But in the 1970s, pro football began to become America's defining game, and it was about as subtle as a kick in the head. As Kevin Cook suggests in his new book, the '70s - the days of Mean Joe, "Mad Dog" John Madden, buttoned-up Tom Landry and Howard Cosell - the days when football was raw and unfiltered.