It is conventional wisdom among journalists that while the world around us changes, our ethics do not. Yet a fresh look at our standards and practices seems a worthwhile pursuit at this moment. Trust in the press has declined. Politicians lie to the media and to the public, and we have to decide how to cover those lies. Internally, journalists are debating the merits of objectivity in the approach to news, and how to best protect their sources. The rise of nonprofit newsrooms brings new questions about funding. And the rapid growth of AI presents new quandaries. This series is the result of months of interviews with scholars and journalists, including many standards editors in the biggest US newsrooms. Much of the digging was done by Julie Gerstein, a veteran editor and a research fellow with me at Columbia University’s Craig Newmark Center for Journalism Ethics and Security. —Margaret Sullivan