. Psa's

NPR's Brooke Gladstone reports on how public service announcements since WWI have chronicled the evolution of the American psyche. The simplistic messages of decades past gave way to more complicated ideas and even imitators. But p-s-a's show no signs of disappearing and they're still hard to do well. (12:30) 2D 15. ETHICS AND MEANING - There was a summit in Washington this week to discuss the politics of meaning, a new political movement offering progressives/liberals a way to 'reclaim' the family values issue which has been monopolized by the right. They held a Summit on Ethics and Meaning and proposed a "Covenant with American Families", their answer to the Christian Coalition's Contract with American Families. Lynn Neary reports.