1 china india japan united states cooperation to promote clean air energy use and environmental pollution in shi zulin su wangsheng associates south north institute for sustainable development beijing july 2001 2 the 20th century rapid economic has resulted problems caused by human beings greenhouse effect release of carbon dioxide example become a main focus world signing un climate change framework treaty indicates that have reached conclusion about need control exhaust gases such as resulting improvements environment realizing also commits itself action reducing associated with including reduction is strategic material social source given importance production it will be helpful policy emissions other pollutants
