This bulletin outlines the developments on both sides of the border regarding disclosure requirements for reporting issuers in the areas of environmental disclosure and climate change. In Canada, the Ontario Securities Commission released OSC Staff Notice 51-717 Corporate Governance and Environmental Disclosure as well as the OSC report to the Ontario Minister of Finance on the OSC corporate sustainability initiative. The Securities and Exchange Commision in the United States has released interpretive guidance on existing SEC disclosure requirements for reporting companies relating to the issue of climate change.