Forty-two people have the same amount of wealth as the bottom 3.7 billion people, Oxfam says.
Jeff Bezos' wealth has been on a wild roller-coaster ride over the past 24 hours.
His childhood predilections didn't foretell Amazon.
Forbes just released its 2017 Billionaires List, and here's what the five richest men have in common.
CNBC's Robert Frank looks at the top contenders for the title of "Richest Man in the World" and what it would take to top Jeff Bezos' $89 billion.
Forbes says there's a new richest man in the world. But other billionaire counters say nothing has changed.
Warren Buffett has donated roughly $2.9 billion more Berkshire Hathaway stock to five charities, as part of his plan to give away his fortune.
Facebook CEO Mark Zuckerberg is the biggest gainer in Forbes' 2016 billionaires list of the world's richest people.
The world's wealthiest couple has a combined net worth of $85.7 billion, according to Wealth-X.
Warren Buffett has moved ahead of Mexico's Carlos Slim on the Forbes ranking of billionaires, thanks to big gains for Berkshire shares.
Upended retail apparel industry by building the supply chain to get the newest fashions into his Zara stores fast at prices consumers could afford.
The rich are getting richer at a fast clip, led by the Oracle of Omaha, Warren Buffett, who earned $37 million a day this year, Wealth-X said.