Companies must consider the effects of global warming and efforts to curb climate change when disclosing business risks to investors, the U.S. Securities and Exchange Commission said. Guidelines approved today require companies to weigh the impact of climate-change laws and regulations when assessing what information to include in corporate filings... [The] commission said companies in the U.S. should also consider international accords, indirect effects such as lower demand for goods that produce greenhouse gases, and physical impacts such as the potential for increased insurance claims in coastal regions as a result of rising sea levels... The commission voted along party lines with two Republicans, Kathleen Casey and Troy Paredes, rejecting the proposal. Both said scientific claims that man-made emissions are contributing to global warming are “unsettled”... The California State Teachers’ Retirement System [CalSTRS]...is among investors seeking more data from companies on environmental risks... Abby Joseph Cohen, a senior investment strategist at Goldman Sachs..., said that while more companies are reporting climate-change data..., the information isn’t in a standard form and is difficult to analyze. [refers to American Electric Power, Exelon]