August 2005-Present. Director of the Center for Sciences Writings and Affiliate Professor in the College of Arts and Letters, Stevens Institute of Technology, Hoboken, New Jersey. Responsibilities include organizing events on science-related topics, writing a weekly column, "The Scientific Curmudgeon," for The Stute (the Stevens school paper) and teaching courses on science-related topics.
1997-Present. Freelance science writer. Articles published in the New York Times, Washington Post, Los Angeles Times, Time, Newsweek, London Times, Chronicle of Higher Education, New Republic, Discover, Science, New Scientist, Technology Review, Slate, and elsewhere.
1986-1997. Senior Writer, Scientific American Magazine. Wrote over 400 articles on science, technology, medicine, mathematics, philosophy, and national security. Also edited articles and managed news section.
1983-1986. Associate Editor, IEEE Spectrum Magazine. Wrote and edited articles on technology and its social implications.