Planet Earth has never had so many billionaires

The number of billionaires worldwide – and their combined wealth – reached record highs this year, buoyed in particular by gains in tech stocks, Swiss bank UBS has found.

​ The number of billionaires worldwide – and their combined wealth – reached record highs this year, buoyed in particular by gains in tech stocks, Swiss bank UBS has found. Read More Breaking News, Latest News and Videos | CNN