Bill Gates is back with his fourth Reddit AMA, and it is going on right now. Head on over, and get your questions answered! To try and keep people from asking the same questions over and over, he's answered some of his most popular questions in a YouTube video.
Additionally, both Bill and Melinda Gates have published their eighth annual letter, which they talk about super powers they wish they had. If you have any burning questions for Mr. Gates himself, hit the link below to try and get them answered.