Warren Buffett is now richer than Bill Gates after $18 billion wealth gain this yearWarren Buffett overtakes Bill Gates on Bloomberg Billionaires Index after a remarkable increase in net worth this year.
The world's richest people are worth far more today than in 2000 - but most of the names on the list have changedWealth rankings have shifted significantly since 2000, with many former leaders growing their fortunes alongside new entrants.