739 Travel Like a Diplomat; Making a Difference; German Pop

Get some travel advice from the former U.S. ambassador to Bulgaria, who recommends his favorite vacation getaways in the Balkans. Then listen in as a climate scientist describes the efforts that have worked — and some that haven't — in combatting the pollution that causes climate change…and what you can do now to make a difference. And hear how Germany's pop music has evolved to reflect a half century of intense cultural transformation.