Kimbal Musk was 25 when he and his brother Elon (perhaps you've heard of him?) sold their first tech company, called Zip2, for around $300 million. Elon poured some of his money into his next venture, which later became PayPal. Kimbal invested, but left Silicon Valley for culinary school, and later started opening a series of highly regarded restaurants in Colorado. Now he's on a mission to help America eat healthier, more sustainable food.
Image: http://www.fastcoexist.com/
