Gates took a four-year hiatus from the Forbes world’s richest list, but he is back. Gates, 58, reclaims the title from Mexican telecom mogul Carlos Slim Helu, who held the title since Gates had slipped. Over the past several years, Gates has given away $28 billion of his own personal wealth to the Bill & Melinda Gates Foundation.
The Solutions 16 have advanced to Round 2, so now it's time to choose your chief. Voting for the round closes at noon ET on March 31! Help your favorites move on through the CRN Channel Madness Tournament of Chiefs.