Jeff Bezos just pledged to spend $10 billion to fight climate change. Here's how the richest person in the world makes and spends his billions.

· *Jeff Bezos, the wealthiest person alive, has pledged to spend $10 billion to fight climate change.*
· *Bezos became nearly $2 billion richer after selling some of his Amazon stock earlier this month.*
· *As Amazon's founder and CEO, Bezos was the first person in modern history to accumulate a fortune of over $100 billion...