B9 Shipping and the Greenheart project are pioneering new, fully sustainable, forms of ship design. Despite industry scepticism the boats - based on wind power and biomethane - could signify a return to the great age of sail, reports Ewan Kingston
It has no synthetic alternative and some scientists believe supplies may already be in a terminal decline. But there is still no international effort to tackle the massive agricultural problems that will come when the phosphorus runs out
The idea of a 'leisure economy' has been predicted for decades, but never realised. Despite this, research shows that our working habits continue to put a strain on the planet's resources. Could tackling climate change be as simple as working less?