Talk to Al Jazeera - Bill and Melinda Gates: Changing the world

Talk to Al Jazeera - Bill and Melinda Gates: Changing the world

Talk to Al Jazeera - Bill and Melinda Gates: Changing the world

The founders of the world's largest transparently operated private foundation talk about their visions and ambitions.

User: Al Jazeera English

Views: 364

Uploaded: 2012-09-02

Duration: 25:30