Wood produces even more carbon dioxide per kilo than coal. On the other hand, it comes from a local, renewable source. But Marriott knows it's not the answer. Not everyone can get their energy from wood. Otherwise we'd need a forest bigger than Britain.
All predictions suggest that it is the sixth generation that faces the largest challenges.
Or rather that if we don't face up to our challenges now, and make changes now, the sixth generation will have to make drastic changes in order to avoid catastrophe in the seventh.