BBC: Europe’s environment chief Stavros Dimas says the EU’s leaders are still committed to ambitious CO2 cuts of up to 30% by 2020, despite the appearance of back-tracking at last week’s European summit. Mr Dimas said it was natural for national leaders to debate the precise details of how the cuts would be implemented – but that did not suggest a weakening of overall resolve. Green groups gave a shudder last week when they heard Europe’s big players – especially Germany – were …