► Subscribe to the Financial Times on YouTube: http://bit.ly/FTimeSubs<br /><br />Punk Economics and FT economics writer Martin Sandbu bring to you a cartoon explainer on the economics you need to know: why official interest rates are now negative in a quarter of the global economy without causing, so far, massive cash withdrawals.<br /><br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes
