The world has a new global steering committee, the G20 group of developed and 'emerging' economies, which has committed itself publicly to supporting economic growth that reaches the poorest people, and doesn't destroy the environment in the process. At least, that's the talk, but according to a new survey by Oxfam, the walk isn't happening. That matters because the G20 countries are home to half the world's poor people, and account for a much greater chunk of its ecological footprint. Climate change is just the best-known consequence of such failings. Rising inequality also undermines political stability - ask the Occupy movement.