Today, we've got another installment of our popular "World's Greatest Investment Ideas" series. This week's interview is with Porter Stansberry, founder of Stansberry & Associates Investment Research.

We sat down with Porter to discuss one of his favorite investment ideas. It's an idea he says literally changed his investing life, and one he thinks all readers should become familiar with immediately - buying discounted corporate bonds.

We know most investors think buying bonds is about as exciting as watching paint dry, but this idea may surprise you. When Porter says he's found a way to double his money while taking on zero risk, it definitely gets our attention.

You can learn how you can put this idea to work for yourself in this exclusive interview.

Any investor who hopes to safely make a fortune in stocks cannot afford to ignore this idea.

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