Warren Buffett has rode the waves of wise investments back to the #1 spot on Forbes annual list of the world’s richest men. His personal wealth grew by $10 billion last year, from $52 billion to $62 billion. Mexican telecom mogul Carlos Slim came in second place with $60 billion in personal assets. Bill Gates is down to #3 after spending the past 13 years at #1.

Buffett announced last year that he would be donating the majority of his accumulated wealth to the Bill & Melinda Gates Foundation, a charity that funds major projects around the world - most of them health related.