5 Smart Investing Principles The slideshow presentation that you would like to view is too large for your current screen resolution. Click here to view to view the slideshow at full resolution. Launch Presentation » Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Life and Death of a Twenty Dollar Bill How long does a $20 bill last? Your DNA Test Preparing for the unexpected can make all the difference if your family relies on your income. Disability Income This calculator estimates your chances of becoming disabled and your potential need for disability insurance.