David Spratt is a climate policy analyst and cofounder of Carbon Equity, which advocates personal carbon allowances as the most fair and equitable means of rapidly reducing carbon emissions. He has extensive advocacy experience in the peace movement and in developing community campaign communication and marketing strategies. Philip Sutton is the convener of the Greenleap Strategic Institute, a nonprofit environmental strategy think tank and advisory organization promoting the achievement of global and local ecological sustainability. He is the founder and director of strategy for Green Innovations, the architect of the Victorian Flora and Fauna Guarantee Act, and a former president of the Australian and New Zealand Society for Ecological Economics.