Warren Buffet earned $12.7bn in 2013 and has net worth of $59.1bn at year end.
Microsoft expects to hire a new CEO, replacing the retiring Steve Ballmer, in the early part of 2014.
Winfrey says she feels thankful that she doesn't have kids.
Prince Charles to represent UK monarchy at largest gathering of heads of state in decades.
An affectionate look at the anti-apartheid giant who also found time to brighten South Africa's sartorial scene
Stephen Elop 'less likely' to become Microsoft CEO, as company focuses on Alan Mulally and Satya Nadella.
UK scientists have won the Bill & Melinda Gates Foundation award for inventing the next generation of condoms.
Former Nokia CEO Stephen Elop is the "hot favourite" to take over as Microsoft CEO as the company narrows its shortlist.
Facebook boss's aim to get world online 'in our lifetime' a joke, says Microsoft co-founder.
World's richest man Bill Gates acquired a 5.7% shareholding in Spain's Fomento de Construcciones y Contratas.
Director of the Europe and Middle East division says philanthropy and entrepreneurship is vital for economic recovery
Global Slavery Index says nearly half of modern slaves in India, with Mauritania having highest proportion.
Microsoft board of directors wants to replace outgoing CEO Steve Ballmer before the end of the year.
As Patch Tuesday celebrates its tenth birthday we look back at the remarkable turnaround in Microsoft's security processes.
Theus offered to wipe US debt before money was taken back off him.
Three top investors in Microsoft call for chairman Bill Gates to step down.
Microsoft founder Bill Gates admits Windows Ctrl-Alt-Delete keyboard command was a mistake.
Steve Ballmer give emotional farewell speech as Ford's Alan Mulally emerges as favourite for Microsoft top job.
A number of important Microsoft investors have urged the special committee looking for a new CEO to consider Ford's Alan Mulally.
Apple iWatch and Samsung Galaxy Gear smartwatches are hoping to succeed where IBM, Palm, Microsoft and even Samsung have failed before.
Stephen Elop if the overwhelming favourite to take over as Steve Ballmer following the company's purchase of Nokia.
Following Steve Ballmer's surprising resignation, David Gilbert looks at the candidates likely to fill his role.