This presentation is for interested members of the public including investors, NGO's, and educators. I chose to focus on the use of disclosure reporting and ranking as market mechanisms because I believe there's untapped potential in the pursuit of significant behavioral change for carbon reduction. Social science research indicates that accountability reporting and transparency initiatives can impact on corporate behavior due to their concerns with reputational gains and losses. There are many carbon reporting systems and indexes being developed. It is important to view these initiatives critically to ensure that they meet both science-based targets and social equity principles.