Environmental Problems and Policy: 2000–2050
预测未来50年环境政策趋势：市场化工具增多、监管权力向国际转移，发达国家环境持续改善，发展中国家面临更大挑战。
The next 50 years will see more use of market-based tools for environmental protection. Regulatory authorities everywhere will require polluters to report emissions. Authority will leak away from national governments; some will be devolved to lower levels of government, but some will be lost to international bodies. Environmental conditions will continue to improve steadily in developed countries. The developing countries will be less fortunate; at least until rising incomes provide the impetus for stricter standards. Some losses will be irreversible, as with species that are extinguished.