Bill Gates plans to donate the majority of his $200 billion fortune over the next 20 years, focusing on improving health and education across Africa. Speaking at the African Union, Gates stressed that investing in maternal health,

Bill Gates will spend most of his wealth on improving health and education services in Africa over the next 20 years, the billionaire Microsoft co-founder pledged Monday. The big picture: He announced last month plans to spend more than $200 billion through the Gates Foundation that he established with ex-wife,