Negative central bank interest rates now herald new danger for the world

The world's tentative experiment with negative interest rates got off to an unremarkable start.

Sweden's Riksbank - the world's oldest central bank - became the first major monetary authority to cross the rubicon and take its main policy rate into the red exactly a year ago to the month

Read More: http://www.telegraph.co.uk/finance/economics/12149894/Mapped-Why-negative-interest-rates-herald-new-danger-for-the-world.html