Just how important is money? Few would deny that it plays a key role in the economy.­ But one school of economic thought, called monetarism, maintains that the money supply (the total amount of money ...

You’ve got $1,000 you don’t need for, say, a year and want to earn income from the money until then. Or you want to buy a house and need to borrow $100,000 and pay it back over 30 years. It would be ...