Transition to a Green Economy is Urgent. Where is humanity headed? Is today's development sustainable? No one knows the answer to the first question, but the answer to the second gives an indication. A virtually unanimous chorus of scholars, experts, and policy makers think that humanity must take a new direction and change its societies and their way of thinking. Our ruthless exploitation of natural resources is approaching the limit of what the planet can sustain. In 2012, it's once again time for the World Summit on Sustainable Development, and there is an urgent need for wise and practical decisions.