Business Green: Christiana Figueres yesterday used her first interview after being confirmed as the next head of the UN’s climate change secretariat to call for a step-change in the international talks to replace or extend the Kyoto Protocol. Speaking to the BBC’s One Planet programme, the Costa Rican diplomat said it was time for countries to “make more effort, it’s time to be more ambitious”. She also urged negotiators to take a more “transparent” and “inclusive” approach to the talks, …