Genetically modified bananas loaded with vitamin A are scheduled to go into human trials in the US with the aim of improving nutrition in Africa.
Stock sale puts Gates in second, behind fellow former CEO Steve Ballmer.
It seems that the Microsoft chairman would like Facebook and Google billionaires to pay attention to eliminating diseases afflicting the poor, in addition to wiring up the planet.
For the first time in four years, Microsoft's chairman beats out telecom mogul Carlos Slim. Other tech execs grace the list this year, including Ellison, Page, Bezos, Zuckerberg, and some newcomers.
Microsoft's co-founder dishes on everything from a global condom competition to Bitcoin to his advice for aspiring computer science students.
In his foundation's annual letter, Gates says it's a myth that poorer countries cannot become wealthier.
Ballmer gets the blame for Microsoft's recent lackluster stock performance and assorted product misses, and so should Bill Gates and rest of the company's board of directors.
Gates has granted Manchester University £62,000 to research making condoms out of a new material.
Bill Gate reemerges on Reddit to share an unusual image that ties into his work through the Bill & Melinda Gates Foundation.
After a successful education-focused hackathon last year, the two tech giants are expanding the program with two events, female teams, and prizes for the best ed tech apps.