The papers in this issue are based on presentations by the authors at the 163nd National Meeting of the American Association for the Advancement of Science, Seattle, Washington, 13–18 February 1997 in the session entitled Damned If You Do, Damned If You Don’t: What the Scientific Community Can Do about Whistleblowing organized by Stephanie J. Bird and Diane Hoffman-Kim. The papers have been modified following double blind peer review.