Cities are at a crossroads - 'eco urbanists' want efficiency and artificial ecosystems; conventional designers want to maintain the best bits of our current urban spaces. Can they co-exist?
We can continue to squander our resources and react to food crises as they happen, or we can fundamentally change the way the food systems work, says Carolyn Steel
Sustainable transport offers not only a golden ticket out of our pollution- and traffic-choked cities, but also a means of improving the health and well-being of travellers and society alike.