The Ontario Securities Commission (OSC) recently issued the results of a study on the disclosure of material information concerning environmental matters. Julia Schatz and Keith Sutherland review the OSC's Staff Notice on Environmental Reporting, highlight the guidance it provides to reporting issuers, and discuss investors' growing demand for information on climate change risk exposure in Canada and the United States.. "Disclosure of Environmental Information in Securities Law," appeared in Volume 17, No.3, of Environews, the Ontario Bar Association's Environmental Law Section newsletter.