SEC approves rule requiring some companies to report greenhouse gas emissions. Legal challenges loom

The U.S. Securities and Exchange Commission on Wednesday approved a rule that will require some public companies to report their greenhouse gas emissions and climate risks, after last-minute revisions that weakened the directive in the face of strong pushback from companies.

The rule was one of the most anticipated in recent years from the nation’s top financial regulator, drawing more than 24,000 comments from companies, auditors, legislators and trade groups over a two-year process. It brings the U.S. closer to the European Union and California, which moved ahead earlier with...