John Horgan is a science journalist and Director of the Center for Science Writings at Stevens Institute of Technology, Hoboken, New Jersey. A former senior writer at Scientific American (1986-1997), he has also written for The New York Times, National Geographic, Time, Newsweek, The Washington Post, Slate and other publications around the world. He writes the "Cross-check" blog for Scientific American and contributes to "Science Faction" on (see links at left). He tweets under the tag @​horganism (​Horganism).

Horgan's most recent book is The End of War, now available in paperback and as an e-book from McSweeney's Books. It has been called "the best book I've read in a very long time" (journalist David Swanson) and "thoughtful, unflappable, closely argued" (novelist Nicholson Baker). Horgan has discussed the book on NPR and MSNBC, among other media outlets, and at Columbia, NYU, Rutgers and other universities.

Horgan's other books include Rational Mysticism: Dispatches from the Border Between Science and Spirituality, Houghton Mifflin, 2003, which The New York Times called "marvelous" (see outtakes from the book posted on this site); The End of Science: Facing the Limits of Science in the Twilight of the Scientific Age, Broadway Books, 1996, a U.S. bestseller translated into 13 languages; and its followup The Undiscovered Mind: How the Human Brain Defies Replication, Medication, and Explanation, Free Press, 1999, which was a finalist for the 2000 British Mind Book of the Year and has been translated into eight languages.

Horgan's publications have received international coverage. He has been interviewed hundreds of times for print, radio, and television media, including The Lehrer News Hour, Charlie Rose, and National Public Radio's Science Friday. He has lectured at dozens of institutions in North America and Europe, including MIT, Caltech, Princeton, Dartmouth, McGill, the University of Amsterdam, and England's National Physical Laboratory.

His awards include the 2005 Templeton-Cambridge Journalism Fellowship in Science and Religion; the American Psychiatric Association Certificate of Commendation for Outstanding Reporting on Psychiatric Issues (1997); the Science Journalism Award of the American Association for the Advancement of Science (1992 and 1994); and the National Association of Science Writers Science-in-Society Award (1993). His articles have been selected for the anthologies The Best American Science and Nature Writing and The Best American Science Writing.

Horgan was an associate editor at IEEE Spectrum, the journal of the Institute of Electrical and Electronics Engineers, from 1983 to 1986. He received a B.A. in English from Columbia University's School of General Studies in 1982 and an M.S. from Columbia's School of Journalism in 1983.