It's a positive, useful book - how to make choices. We need to get governments on board. I wish Lily was world controller" -- Vivienne Westwood, fashion designer and founder of Vivienne Westwood Ltd.

Optimism demands action. Optimism is an active choice. Optimism is not naïve and it is not impossible. We are living in an age of turmoil, destruction and uncertainty. Global warming has reache