“This is climate change like we’ve never known it in the federal government,” said Jody Freeman, the Archibald Cox Professor of Law and director of the School’s Environmental and Energy Law Program. Freeman was among Biden’s advisers as planning got going last summer. She also, with Richard Lazarus, the Howard and Katherine Aibel Professor of Law, who appeared Thursday as well, worked on the Biden transition team to craft the new administration’s environmental approach.