Warren Buffett tumbles to his lowest ever position on the list of the world's richest people after a $2.9 billion charity donation

Billionaire investor Warren Buffett donated $2.9 billion worth of Class B shares in his Berkshire Hathaway charity this week, taking his total philanthropic contributions to $37 billion in 14 years. The donation, however, has pushed him to his lowest ever position on Bloomberg's widely cited Billionaires Index. Buffett was overtaken on the list by Google founders Larry Page and Sergey Brin. Jeff Bezos, CEO of Amazon is the world's richest man on the index, having gained $68 billion since the pan...