GreenBiz: Two new studies from investor group Ceres, the Environmental Defense Fund and the Center for Energy and Environmental Security assess the major impacts climate change could have on global companies, and calls on the U.S. Securities and Exchange Commission to set standards for climate-related risk reporting. The two new studies, one an in-depth look filings from 100 global companies in 2008, and another a longitudinal look S&P 500 companies’ reports over the past 13 years, detail …