The world's top economies unveil further sanctions on Russia and promise military aid - we speak to Dmitry Gorenberg at the CNA research institute in Arlington, Virginia. Plus we hear from Chris Weafer of Macro Advisory in Moscow about the impacts sanctions are already having on Russia, and from Karina Luchinkina, a Ukranian activist in London urging companies to stop doing business with Russia. In China social media platforms are being forced to publish users' IP addresses in a bid to stamp out fake news, the BBC's Kerry Allen tells us more. Independent economist Michael Hughes talks inflation and consumer prices, Canadian fisherman Grant Scott explains how the Pacific herring fishery is close to disaster, and Natalia Abrams of the Student Debt Crisis Centre in the US tells us how student debt is hindering the wider economy. We talk deadlines with Kevin Murphy at the University of Limerick and atomic clocks in space with Jean Yves Courtois of Orolia - a manufacturer of the incredibly accurate timekeeping devices.

The programme is presented by Russell Padmore and produced by Russell Newlove.