"Berlin Celebrates 20th Anniversary Of Wall's Fall" [audio 2 min 47 sec]

Ceremonies and celebrations marking the fall of the Berlin Wall are taking place in that city today, the 20th anniversary of the day the wall was breached. World leaders joined German Chancellor Angela Merkel in walking through the Brandenburg Gate in the heart of Berlin, crossing the line where the wall once divided the city. Michele Norris talks to NPR's Eric Westervelt, reporting from the German capital.