Howard G Buffett has made his name as both an environmentalist and humanitarian and has gained a distinguished reputation in the world of philanthropy.
Buffett, who has been an Ambassador Against Hunger since 2007, is passionate about helping what he calls the extreme poor in Africa, and it is this passion that has taken him to see WFP projects in countries including Malawi, Zambia, Angola and Tajikistan.
Maybe it was his childhood spent in the US farming state of Nebraska that led Buffett to become a champion of sustainable farming techniques in poor countries.
Part of his work has included the development of virus-resistant sweet potatoes, subsistence farming techniques and clean-water delivery systems.
He has written six books and numerous articles on subjects such as conservation and wildlife. He has travelled the world to document the challenges of preserving biodiversity and providing adequate resources to support human demands.
Buffett heads the Howard G. Buffett Foundation, a private foundation that primarily supports humanitarian activities.