Africa: Aid Can Spur 'Historic Progress' - Bill Gates

allAfrica.com (Washington, DC)-Bill and Melinda Gates, who co-chair the Bill & Melinda Gates Foundation, say that they are responding to a challenge from Warren Buffet by taking on "the really tough problems." They are optimists, they say, focusing on a few big goals and funding innovations, as they work with a variety of partners around the world. Source