Double Your Money in 7,000 Years August 29, 2014 One easy measure of an investment is how long it takes to double your money. images.bwbx.io/cms/2014-08-29/doubleyourmoney_630Binline.jpg http://www.businessweek.com/articles/2014-08-29/bonds-or-banks-doubling-your-money-in-a-low-interest-rate-world [with comment]