The pervasive roles of non-state actors are evident in recent environmental governance actions specifically directed to climate change.1 Since the adoptions of the United Nations Framework Convention on Climate Change2 and its Kyoto Protocol,3 these climate treaties have failed to reshape global responses to climate change effectively (in terms of emission reduction, mitigation and adaptation). However, the non-state actors such as the advocacy group have been persistent in putting pressures on various state actors to comply with their commitments to address climate change adequately through activism and litigation.