Yep, that's billions with a 'b.'
The Koch brothers are worth over $50 billion each after years of family feuds and massive lawsuits — here's how they spend their wealth
The Koch brothers are two of the richest men in the world.
Charles and David Koch each have a net worth of $53.7 billion, according to Forbes.
Their fortunes come from their 42% stakes in the Koch family business: Koch Industries.
Charles is currently the company's president and CEO, while David just announced that he was retiring from the firm.
The Koch brothers are two of the richest people on planet earth.
Charles and David Koch tied for eighth on Forbes' 2018 list of the wealthiest...
Prince William and Prince Harry are the most famous members of a family that goes back 100 years — see the British monarchy's full family tree
The royal family tree of Britain's monarchy is enormous and complicated.
The more famous royals, like Queen Elizabeth II, Prince William, and Prince Harry — who married American actress Meghan Markle — are easily recognizable to most people.
But there's a whole host of distant cousins that are part of the British royal family tree chart.
Here's a look at some of the other families that are descended from King George V — the UK's first Windsor king.
The royal family tree of Britain's monarchy...