Giant strides are needed to decarbonise the world economy, and giant strides need a giant causeway - marked out on the landscape by a global deal on emissions targets, generous finance, and a high and rising international price of carbon.  But what happens if the road-builders are on strike, or working to rule, as seems to be the case in the global negotiations on climate change? Are there other pathways, less suited to giant strides, but perhaps open to fairy footsteps, which might lead to the same destination?

To see Simon's recent article in open democracy, see here.