Economic development, including corporate production activities, leads to the consumption of natural resources and produces pollution, which causes environmental impacts (Warr 2004). Moreover, there have been a number of instances of serious environmental consequences resulting from global corporations' operations and these have been widely publicized in the media and have been widely exposed to society at large, which has resulted in greater social awareness and a movement to prevent future environmental impacts. The media has thus become a powerful stakeholder which corporations have to be concerned and responded. For example, corporations distribute their economic, social, and environmental information especially using their annual reports which includes how corporations manage environmental impacts in order to satisfy their stakeholders and to reduce media pressure on them. Those corporate environmental disclosures have mostly followed the Global Reporting Initiative (GRI) guidelines which are a widely adopted framework for sustainability including environmental reporting (Isaksson & Steimle, 2009).

Keywords: corporate environmental disclosures, news media, stakeholder theory, developing country, Thailand.