Daniel Suelo quit money 12 years ago and has been living in a cave in Utah and survives by eating wild food and roadkill. He has no job, doesn't take welfare and doesn't ever use money.

The BBC took a closer look at Suelo's life and talks to Mark Sundeen, the author who wrote a book about Suelo. It's such a fascinating story and it's almost unbelievable that Suelo managed to live 12 years without spending or earning a single dollar. Just as amazingly, you can actually keep up with Suelo at his blog Zero Currency. [Mark Sundeen]