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John Horgan, who has written for 大眾科學 since 1986, comments on science on his free online journal Cross-Check. He has also posted his books Mind-Body Problems and My Quantum Experiment online. Horgan teaches at Stevens Institute of Technology.

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This article was originally published with the title “The New Challenges” in 大眾科學 Magazine Vol. 267 No. 6 (December 1992), p. 16
doi:10.1038/scientificamerican1292-16

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