Deutsche Welle, the German radio station that went on the air after World War II has grown to a multi-media broadcaster beaming content in dozens of languages around the world. Chancellor Angela Merkel herself was on hand to celebrate the occasion.

Deutsche Welle's mandate has changed considerably since the German international broadcaster was founded in 1953. DW has become a worldwide multimedia network reaching more than 157 million people weekly. A look back – and at the challenges ahead.

A Deutsche Welle investigation has found evidence of collusion between UN-trained rangers and the poachers they are supposed to be stopping in Tanzania.