Watch Gareth Penny, managing director of De Beers, discuss economic development in Africa and how the private sector can faciliate sustained growth.

Jendayi Frazer, Juergen Voegele, and Gary Weir flesh out the drivers of scarcity and security challenges related to natural resources in Africa, focusing on natural resource management. This meeting …

HARRY BROADMAN: Good morning, everyone. Welcome to the third session of this symposium. And before lunch, which I know is a heavy burden to bear before you and before all of us up on stage, we're go…

RICHARD HARRIS: Hello. I think keeping to time, we should -- we should recommence. Thank you all for sticking with the events through the afternoon. I must confess that I was a recent arrival, so I …

J.W. Marriott Jr. shares his views on how the U.S. economy and global leadership can rebound; the prospects for growth in China, India, and Brazil; the need for immigration reform to maintain U.S. gl…