30 September 2013 | By David Nicklaus | stltoday.com
Even in the age of Paypal, Square and Bitcoin, many of us pull out a green piece of paper to pay for our morning coffee without giving the transaction much thought.
Somebody, though, had to get that piece of paper to your neighborhood ATM, and you had to spend some gasoline (or shoe leather) to get it out. Cash also carries a risk of theft, and it allows some unscrupulous people to evade taxes.
