On May 3, the Asian Development Bank and the Asian Development Bank Institute (ADBI) released Policies and Practices for Low-Carbon Green Growth in Asia arguing that since Asia now accounts for 27% of world wide energy carbon-dioxide emissions, a share predicted to reach 40% by 2030, environmentally sustainable cities are desperately needed to curb emissions growth. The study called for regional carbon markets, the gradual elimination of fossil fuel subsidies, and a free-trade zone for cleantech. The ADB, which has invested $7 billion in clean energy projects in recent years, says $40 billion annually will be needed for thorough adaptation in the Asia-Pacific region.