Inspiring Green Innovation

There was an excellent programme this week in the BBC's Analysis series by Tim Harford, The Undercover Economist, who examines the economics of different ways to inspire the creators and inventors who will lead the way in this field. Is innovation best left up to the market (with price incentives supplied by the state) or is this issue too big to leave the private sector to its own devices? This can be listened to by going here or play directly (not sure how long the BBC keeps this available).