Understanding the national debt and the role treasury bonds play in it can help investors understand how their treasury bond exchange traded funds (ETFs) work.

Last week on "Fresh Air," host Terry Gross spoke with the authors of "Where Does the Money Go?" It turns out most Americans only have the vaguest idea of national debt and the repercussions of it.

Have a listen – we think you’ll find it illuminating.

The opinions and forecasts expressed herein are solely those of Tom Lydon, and may not actually come to pass. Information on this site should not be used or construed as an offer to sell, a solicitation of an offer to buy, or a recommendation for any product.