The world's second richest man - who's now worth $44 billion - tells editor-at-large Carol Loomis he will start giving away 85% of his wealth in July - most of it to the Bill & Melinda Gates Foundation.

The world's second richest man - who's now worth $44 billion - tells editor-at-large Carol Loomis he will start giving away 85% of his wealth in July - most of it to the Bill & Melinda Gates Foundation.

Neat.