The couple donates $1 million to support a Washington state initiative that would require criminal background checks on firearm sales at gun shows and online.
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.
Bill Gate reemerges on Reddit to share an unusual image that ties into his work through the Bill & Melinda Gates Foundation.
Stock sale puts Gates in second, behind fellow former CEO Steve Ballmer.
One of Bill Gates' all-time favorite programmers is back after pondering the hypothetical: What would people do if the phone had never been invented before the Internet came along?
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.
Gates has granted Manchester University £62,000 to research making condoms out of a new material.
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.
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.