Wood burning environmentally friendly ? CH4 now

Reporter Antony Barnett investigates a subsidised renewable energy industry that turns trees into fuel, and asks whether burning wood instead of coal is really an environmentally friendly answer to climate change.

He travels to the forestlands of the south-eastern United States to find one source of this controversial 'carbon-neutral' fuel, and the biodiverse wetlands of Virginia and North Carolina, where millions of tonnes of wood are harvested and processed into pellets, which are burnt in one of Britain's largest power stations